My Writing Legacy, Science and Service– Part 3 of 7

My Writing Legacy – Part 3 of 7

Science and Service: From the University of the Philippines, Diliman to the U.S. Food and Drug Administration

As I look back over more than nine decades of life, I realize that every journey has a beginning. Mine began not in a government laboratory or corporate research center, but in the classrooms and laboratories of the University of the Philippines, Diliman.

That was where a young Filipino student discovered that science was more than equations, formulas, and laboratory experiments. It was a way to improve lives. It was a calling.

I did not know then where that calling would eventually lead me. I certainly never imagined that one day I would become a chemistry reviewer and later a Team Leader at the U.S. Food and Drug Administration (FDA), helping evaluate life-saving medicines that would reach millions of patients around the world.

Life often unfolds in ways we cannot predict.

A Foundation Built in the Philippines

The University of the Philippines gave me more than an education. It taught me discipline, curiosity, and integrity.

As a chemistry student and later as an instructor, I learned that scientific knowledge carries a profound responsibility. Every experiment must be honest. Every conclusion must be supported by evidence. Every discovery must ultimately benefit society.

Those principles became my lifelong compass.

Although I would later spend most of my professional career in the United States, I never forgot where my scientific journey began. The values I carried with me were deeply rooted in my Filipino education and heritage at the University of the Philippines both in Iloilo ad Diliman .

Crossing an Ocean with Dreams

Like many immigrants, I left the Philippines carrying more dreams than possessions.

America became a land of opportunity, but opportunity alone guarantees nothing. It demands perseverance, sacrifice, and countless hours of hard work.

I continued my studies at the University of Illinois Medical Center, earning both my M.S, and Ph.D. in Pharmaceutical Chemistry. Those years were challenging, but they strengthened my belief that education is one of life's greatest investments.

Every obstacle became another lesson. Every success became another responsibility.

Science in the Service of Humanity

My professional career eventually led me to the U.S. Food and Drug Administration.

For twelve years, I had the privilege of reviewing the chemistry of new drug applications. Behind every scientific report was something far more important than data.

There were patients. Children waiting for better medicines. Families hoping for effective treatments. Physicians relying on safe and effective therapies.

Reviewing anti-infective, antifungal, antiparasitic, and antimalarial drugs was never just paperwork. It was a solemn responsibility. Scientific rigor could literally make the difference between life and death.

That realization never left me.

Leadership Through Service

One of the greatest honors of my career came when I was promoted to Chemistry Team Leader. Leadership, however, was never about authority.

It was about mentoring younger scientists, encouraging excellence, and maintaining the highest standards of scientific integrity.

Science is a collaborative endeavor. No important achievement is accomplished alone.

I remain deeply grateful to the brilliant colleagues with whom I worked, scientists whose dedication often went unnoticed by the public, yet whose efforts quietly improved countless lives.

A Career Remembered with Gratitude

When I retired from the FDA in 2002, I did not think of my career in terms of titles or promotions.

Instead, I thought about purpose. If even one medicine that I reviewed helped relieve suffering...

If even one patient lived a healthier life because scientific standards were upheld...

Then my career had meaning. That, to me, is success.

Carrying Two Flags in My Heart

Although I became an American citizen, I have always carried two identities with pride.

The Philippines gave me my roots. America gave me opportunities to grow.

One taught me who I was. The other allowed me to become what I could be.

I have never seen those identities as competing with one another. Instead, they complement each other beautifully. I remain proudly Filipino. I remain deeply grateful to America.

Beyond Retirement

Retirement did not end my journey of service.

Instead of scientific reports, I now write blog posts.

Instead of reviewing pharmaceutical applications, I share experiences, history, culture, family stories, and reflections with readers in more than 150 countries.

The laboratory has been replaced by a keyboard. But the mission remains remarkably similar.

To educate. To inspire. To preserve. To serve.

My Greatest Discovery

Looking back, perhaps the greatest discovery I made was not in a laboratory.

It was learning that knowledge becomes meaningful only when it is shared.

Science gave me a career. Service gave that career purpose.

Writing now allows me to pass those lessons to future generations.

That is the legacy I hope to leave, not merely that I worked in laboratories or government agencies, but that I tried to use whatever talents God entrusted to me in service of others.

The journey from the University of the Philippines to the U.S. Food and Drug Administration was never simply about professional achievement.

It was about faith, perseverance, education, gratitude, and service.

As I continue writing these Legacy Series reflections, I hope my children, grandchildren, great-grandchildren, and readers around the world will remember one enduring truth:

Success is measured not only by what we accomplish, but by how faithfully we use our knowledge to make life better for others.

That, above all, is the legacy I hope will endure.

Lastly, My Reel of the Day: What Grandma Missed Most

https://www.facebook.com/reel/889263754231939

My Photo and Quote of the Day:

Have You Heard of Carlos Bulosan- Author, America is in the Heart ?

He came off the boat in Seattle in 1930, seventeen years old, and America shanghaied him almost the moment he stepped ashore, sold for five dollars to a fish cannery bound for Alaska. From there Carlos Bulosan followed the harvest the way so many manongs did, down through Washington and into the fields of California, stooping over grapes and asparagus for pennies, sleeping where he could, beaten and turned away for the crime of being Filipino in the land that colonized him.

Tuberculosis put him in a Los Angeles hospital ward for two years, and there, half dead, he taught himself to write. What came out was America Is in the Heart, the book that finally told the Filipino-American story in the Filipino-American voice. He organized cannery workers out of Stockton's Little Manila, got blacklisted for it in the 1950s, and died broke in Seattle in 1956. They nearly forgot him. We do not. We see you, Carlos.

AI Overview:

Carlos Bulosan (1911–1956) was a Filipino-American poet, writer, and labor organizer best known for his 1946 semi-autobiographical masterpiece, [America Is in the Heart]. The book chronicles his journey from the rural Philippines to the United States, capturing the harsh racial and economic exploitation faced by migrant farmworkers in California and the Pacific Northwest during the Great Depression.

Life and Background

Born in Binalonan, Pangasinan, Philippines.
Emigrated to Seattle, Washington, in 1930 at age seventeen.
Suffered severe poverty, illness (including tuberculosis), and systemic racial violence targeting Filipino laborers.
Emerged as an influential voice for social justice, union organizing, and the rights of the working class.

Major Literary Works

America Is in the Heart (1946): A classic blend of autobiography and social commentary that contrasts the brutal reality of American racism with a persistent idealism for democratic equality.
The Laughter of My Father (1944): A popular collection of satirical short stories based on Philippine folktales.
"Freedom from Want" (1943/1944): A famous essay published in the [Saturday Evening Post] as part of Norman Rockwell's Four Freedoms series.
The Cry and the Dedication (1995): A posthumously published novel addressing the Huk Rebellion in the Philippines.
Meanwhile, My Reel of the Day: The top ten Little Manila in the US  
https://www.facebook.com/reel/1586200229966780
Lastly,  My 
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Can AI Really Invent—or Is It Only Imitating Us?

I read something today that made me stop and think:

Artificial Intelligence can imitate human beings remarkably well, but it cannot truly invent.

As someone who has lived through the transition from the typewriter to the computer, from the telephone to the smartphone, and now into the remarkable age of Artificial Intelligence, I find this question both fascinating and deeply personal.

I have been writing on the Internet since 2009. Over the years, I have written about science, technology, food, culture, aging, family, politics, and the many experiences that make up a human life. Today, I sometimes use AI as a writing companion. It can help me organize an idea, improve a sentence, explain a complicated scientific subject, or suggest another way of looking at a familiar question.

And yet, I continue to ask myself: Where does the machine end and the human imagination begin?

AI Is Remarkably Good at Imitation

There is no question that today's AI systems can imitate us astonishingly well.

Give AI a question, and it can write an essay. Ask it to sound humorous, philosophical, academic, poetic, or conversational, and it can change its voice almost instantly.

Give it examples of someone's writing, and it can often produce something that sounds remarkably similar.

It can recognize patterns in enormous quantities of human-created material and then generate something new from those patterns.

That is an extraordinary achievement. But perhaps imitation is not the same thing as invention.

What Does It Mean to Invent?

When we think of invention, we usually think of people such as Thomas Edison, Marie Curie, Alexander Graham Bell, Leonardo da Vinci, or the thousands of less famous men and women whose ideas changed the world.

An invention often begins with something that did not exist before.

But there is something even more important behind the invention:

A human being had a reason for imagining it.

A scientist becomes curious about a problem. An artist sees the world differently.

A writer experiences love, loss, loneliness, joy, or injustice and feels compelled to put those experiences into words.

A child asks a question that adults have stopped asking.

Perhaps this is where the difference becomes important.

AI can generate an answer. But why did the question matter in the first place?

AI Can Combine-Humans Can Imagine

There is an interesting argument that AI actually does create.

After all, if an AI system combines thousands of ideas into something that nobody has previously written or seen, isn't that creativity? Perhaps it is.

AI can certainly produce combinations that are surprising, useful, and sometimes astonishingly original. But there is another way of looking at it.

Much of what AI produces comes from patterns learned from human knowledge. It can rearrange, transform, synthesize, and extend those patterns with extraordinary speed.

Human beings do something similar. We also learn from what came before us.

No scientist works in a vacuum. No writer begins with an entirely blank mind. No artist creates without influences.

So perhaps the distinction between imitation and invention is not as simple as we sometimes think.

But There Is Something AI Does Not Experience

Here is where I believe the conversation becomes especially interesting.

I have lived for more than nine decades. I have experienced childhood in the Philippines, immigration to America, education, marriage, raising children, losing people I loved, building a career, retirement, growing older, becoming a grandfather and great-grandfather, and now living in a senior community surrounded by people with their own remarkable life stories.

Those experiences are not merely information. They are lived experience.

When I write about aging, I am not simply describing aging. I am aging.

When I write about grief, I am not merely defining grief. I have experienced it.

When I write about family, I am not drawing conclusions from a database.

I am writing about people I love. That distinction matters.

AI can write a beautiful paragraph about a grandfather holding his great-grandchild.

But AI has never actually held a great-grandchild.

It can write about the feeling of losing someone you have loved for decades.

But it has never sat alone in a quiet room remembering that person.

It can write about the joy of receiving a letter from a friend.

But it has never waited for the mail. Information is not the same as experience.

The Mystery of Human Creativity

Perhaps the greatest mystery is that we still do not completely understand our own creativity. Where does an original idea come from?

Why does a melody suddenly appear in a composer's mind?

Why does a scientist suddenly see a connection between two seemingly unrelated facts?

Why does a writer wake up at three in the morning with the opening sentence of an essay?

Sometimes creativity seems almost mysterious.

We absorb thousands of experiences throughout our lives, books we have read, people we have met, places we have visited, conversations we have had, successes and failures we have experienced.

Then, unexpectedly, something new emerges. Perhaps human creativity is itself a magnificent form of recombination.

If so, the difference between human creativity and AI creativity may not be as black and white as we imagine.

The Question I Find More Interesting

I am less interested in asking: “Can AI invent?”

than I am in asking: “What will humans invent because AI exists?”

That may be the more important question. The printing press did not eliminate human creativity.

The camera did not eliminate painting. The computer did not eliminate writing.

The Internet did not eliminate communication. And AI will not necessarily eliminate human imagination.

Instead, every new technology changes what humans are capable of doing.

AI may become a remarkable collaborator, a tool that helps us explore ideas we might never have explored alone.

It may help a scientist see patterns hidden in enormous quantities of data.

It may help a physician recognize possibilities.

It may help a writer find the words for an idea that has been sitting quietly in his or her mind.

But the purpose behind the work may still come from us.

AI May Be Our Mirror

Perhaps there is another way to understand Artificial Intelligence.

Maybe AI is not simply a machine trying to become human.

Maybe it is a mirror showing us what humanity has already created.

AI has absorbed enormous amounts of human knowledge, our science, literature, history, mathematics, music, philosophy, successes, mistakes, wisdom, and even our prejudices.

When AI speaks, in a sense, we are hearing echoes of humanity.

That should humble us. And perhaps it should also make us appreciate ourselves a little more.

My Conclusion

I am fascinated by AI. At my age, I sometimes joke that I have lived through several technological revolutions and now have the privilege of witnessing another one.

But I do not believe that AI makes human beings less important. Quite the opposite.

The more powerful our machines become, the more important it may be to remember what makes us human.

Curiosity. Imagination. Compassion. Love. Memory. Wonder.

And perhaps most importantly, the ability to ask a question for no other reason than the desire to understand.

AI may imitate our language. It may imitate our reasoning.

It may even surprise us with ideas that appear remarkably creative.

But I believe the greatest human invention is still the ability to look at the world and say:

“What if?”

That two-word question has driven science, art, literature, exploration, and civilization for thousands of years.

And perhaps that is where our future relationship with AI will ultimately be decided.

Not by whether machines can imitate us, but by whether we continue to imagine beyond what machines already know.

At 91, I am still asking What if? And perhaps that is one human habit I have no intention of giving up.

AI Overview:

AI has evolved far beyond mere imitation, moving into a territory where it can independently discover and synthesize entirely new concepts that humans have overlooked. While early generative AI operated primarily as a advanced statistical mirror, predicting the next word or pixel based on human data, modern AI architectures leverage advanced reinforcement learning and autonomous search to break out of the "imitation trap."

🧬 Real-World Inventions by AI

AI is no longer just generating text; it is actively creating tangible, real-world breakthroughs:

• New Materials: Google's AI explored undiscovered stable materials, identifying 2 million new crystalline structures. This expanded humanity's known stable materials list by over ten-fold, paving the way for next-generation superconductors and batteries.
• Life-Saving Antibiotics: MIT researchers utilized deep learning to discover Halicin, a powerful new antibiotic compound capable of killing drug-resistant bacteria by analyzing structures humans had never considered. 
• Hardware & Electronics: AI has autonomously designed specialized aerospace hardware, such as the uniquely shaped X-Band Antenna used on NASA's ST5 satellite, optimizing performance beyond what human engineers drafted. 

⚖️ The Innovation Spectrum: Imitation vs. Invention

Feature	Artificial Imitation (Pattern Matching)	Autonomous Invention (Discovery)
Mechanism	Predicts the most statistically likely output based on pre-trained human data.	Employs reinforcement learning to generate, test, and refine thousands of novel reasoning paths.
Output Type	Mimics existing artistic styles, summaries, or boilerplate code.	Surface-level hidden chemical rules, physical laws, or molecular combinations.
Human Role	Provides direct templates or content to copy.	Sets the boundary constraints and safety rules for the AI to explore.

🛑 Why the Debate Persists

Despite these breakthroughs, skeptics argue that AI lacks inner intention, it does not create out of desire, curiosity, or personal experience. Instead, it uses computational brute force to recombine patterns across vast datasets. Furthermore, current legal frameworks, such as the U.S. Federal Circuit Court ruling in Thaler v. Vidal, explicitly dictate that only natural persons can be legally named as inventors on patents, keeping the legal definition of "invention" strictly human for now.

My Photo of The Day: Pier 7, San Francisco

My Reel of the Day: Meaning of a Good Life  

https://www.facebook.com/reel/1750138316323912

Ten of My Pre-AI Articles from My Hubpages Account That Needs to be Updated

I asked ChatGPT to look into my Hubpages Articles and asked for the top ten articles that need  to be updated. Here's ChatGPT detailed response.  

I looked through your HubPages profile and several of the older articles. You have 63 articles, and I think there is a wonderful opportunity here: rather than simply “correcting” the old writing with AI, we can bring your best life stories into the present while preserving the voice and experiences of the pre-AI David Katague.

Here's AI Recommendation: My strongest recommendation: start with this one

1.“Caste System in the Philippines-Discrimination of Filipinos in the United States and my Pinoy Pride List.”

I would make this our #1 candidate for an AI-assisted rewrite/update. Why?

The original is actually much more interesting than its title suggests. It combines:

• Filipino social class and regional differences
• Spanish-mestizo and Chinese-Filipino history
• Filipino-American discrimination
• your family's experience in Missouri
• Carlos Bulosan and the Manongs
• Overseas Filipino Workers
• Filipino-American political participation
• your original “Pinoy Pride List”
• and, most importantly, your own immigrant experience

The article was last updated in 2017, and some of its political and demographic information is now very dated.  But the personal material is timeless.

For example, the story about Macrine and your children encountering subtle discrimination at the country club in Gladstone, Missouri, is much more powerful today when connected to your later life as a Filipino-American scientist who eventually became an FDA Chemistry Team Leader. 

That gives us a much stronger theme:

From discrimination to contribution: My Filipino-American journey

That is a story your worldwide readers can understand even if they know very little about the Philippines.

2. My second choice: your World War II memories

Your “My Childhood Memories of World War 2-A Trilogy” is another article I would strongly consider updating.  This may actually become one of your most valuable legacy pieces.

You experienced the Japanese occupation as a child in Iloilo. Today, you are writing as a 91-year-old who can look back across more than eight decades.

AI can help us do something your original article could not do in the same way:

connect the child's memory with the wisdom of the 91-year-old narrator.

That would make it much more than a historical account.

It could become something like: “What a Filipino Child Learned From War and What I Understand About It 80 Years Later.”

That would resonate with readers in the Philippines, America, Japan, and anywhere people have experienced war.

3. Third: “Medical Mission of Love to Marinduque”

This one is especially important because it represents you and Macrine serving others together. 

Your present-day writing about Macrine is much deeper and more reflective than the writing you were doing years ago.

So rather than simply updating the old article, I would reframe it through the eyes of today’s David:

“Macrine and I Learned That We Had Not Really Lived Until We Touched Other Lives.”

Your quotation-“You have not really lived if you have not touched the life of others.”

could become the heart of the article. This would also fit beautifully into your emerging Seven Writing Legacies.

4. Fourth: “Bridge Is My Card Game: What Is Yours?”

This is a surprisingly good candidate. Your original article explains why you enjoy bridge and discusses communication and partnership. 

But the David Katague of 2026 has a much better story to tell about bridge than the David Katague of 2017.

You have now been playing bridge for more than six decades, and you continue to play regularly at The Heritage Downtown.

That allows us to turn a simple card-game article into something much broader:

“What Bridge Has Taught Me About Growing Older”

We could connect bridge with:

• patience
• memory
• partnership
• trust
• communication
• humility
• luck
• decision-making
• friendship
• healthy aging

And then bring the story right into your life at THD. That could become a very engaging worldwide senior-aging article.

Fifth: “The Day the World Trembled—September 11, 2001”

This is another article where your age gives you a unique perspective. The original asks readers where they were when the world changed. 

Today, however, you can write about September 11 25 years later.

That is particularly timely because 2026 marks the 25th anniversary of 9/11.

Instead of merely updating the historical facts, I would write:

“September 11, 2001: What I Remember and What 25 Years Have Taught Me”

Your FDA experience could also give the piece a perspective most people cannot provide: you were a senior scientist and drug-regulation professional during that period.

But there is one article I would NOT update first

Your “How to Retire in the Philippines for Less Than $1,500 a Month” is interesting, but the basic premise is now badly dated. It was written about six years ago and the cost assumptions have changed considerably. 

Instead of merely updating the numbers, I would eventually transform it into something much more personal:

“Could I Still Retire in the Philippines Today? What 24 Years of Experience Taught Me.”

That would be far more valuable to your worldwide readers.

My proposed “Pre-AI → AI” revival series

I see an opportunity to create a whole series from your old HubPages work:

Priority	Original article	New direction
🥇	Caste System / Pinoy Pride	From Discrimination to Filipino-American Pride
🥈	World War II Trilogy	What an Iloilo Child Learned From War
🥉	Medical Mission of Love	Macrine and I: A Life of Service
4	Bridge Is My Card Game	What Bridge Taught Me About Growing Older
5	September 11	25 Years After the Day the World Trembled
6	Life in the Philippines vs. USA	What 24 Years Between Two Countries Taught Me
7	60th Wedding Anniversary/Love Story	Macrine and Me: 63 Years of Marriage and Love
8	My Bucket List	My 101 Things to Do—and What I Learned by Doing Them
9	Marinduque Island Paradise	Why Marinduque Became My Second Home
10	First Thanksgiving in America	My First Thanksgiving in America: A Filipino Student Arrives in 1960

The last one especially could become a beautiful immigration story because 1960 was such an important turning point in your life.

What I would do differently from simply “editing”

This is the important part. I would not make these articles sound like ChatGPT wrote them.

Your old articles have something AI cannot manufacture: you actually lived the experiences. Instead, I would use AI as your editor, historian, researcher and storytelling partner.

For each selected article I would:

1. Preserve your original memories and facts.
2. Remove outdated information or clearly label it as historical.
3. Add relevant 2026 context where appropriate.
4. Improve the opening so readers immediately want to continue.
5. Break long sections into easier-to-read passages.
6. Add the reflective wisdom of your 91-year-old perspective.
7. Connect the story to your Filipino-American identity.
8. Add a stronger emotional ending.
9. Where appropriate, connect the old story to your present life at THD.
10. Keep your characteristic humility, gratitude, curiosity and gentle humor.

That last point is crucial. Your recent posts are stronger than many of your early HubPages articles because you now have a much larger life story to draw upon.

And I think there is an even bigger opportunity. Your HubPages account is essentially a time capsule of the pre-AI David Katague. Your current blog is the AI-assisted David Katague.

We could deliberately create a series called something like:

“My Pre-AI Writings: Looking Back With AI”

You could tell your worldwide readers:

I wrote these stories years before artificial intelligence became my writing companion. Today, at 91, I am revisiting some of them not to change my memories, but to see what I understand differently after another decade of living.

That is a very compelling concept for your readers.

And I would start with the Caste System/Pinoy Pride article, because it already contains the seeds of one of your strongest themes: your journey from a young Filipino immigrant to a Filipino-American scientist, husband, father, grandfather and lifelong learner.