Imaginary interview with James Watson & Francis Crick
by Charactorium · James Watson & Francis Crick (1928 — 2004 / 1916 — 2004) · Sciences · 4 min read
Two twelve-year-old visitors, on a school field trip, push open the door of an old Cambridge laboratory. Before them, two men are waiting with a large metal model that looks like a twisted ladder. They are James Watson and Francis Crick, ready to tell the story of the morning they understood the secret of life.
—Is it true you discovered DNA by playing with cardboard?
Yes, my child, and it sounds crazy! In February 1953, we cut out little cardboard shapes to represent the bases of DNA. Imagine four puzzle pieces of different sizes. We pushed them around the table, turned them, like children trying to fit pieces together. And suddenly, I saw: some pieces fit perfectly in pairs! Adenine with thymine, guanine with cytosine. There it was, under our fingers. The great mystery of heredity lay in a morning's cutting game.
The secret of life lay in a cutting game.
—So what did you do in your afternoons?
We tinkered, you see! Our afternoons at the Cavendish Laboratory were spent assembling metal rods. Imagine a giant construction set, but where each rod represents an atom, at the right distance and angle. We measured everything with a slide rule—an instrument used for calculations before machines. We argued for hours: “No, the angle is wrong,” “Start over.” We dismantled, we rebuilt. It was patient and a bit annoying. But a molecule, you see, you have to touch it to understand it.
A molecule, you have to touch it to understand it.
—How old were you when you found it?
I, Watson, was only 25! I was young, American, a bit impatient. And Francis was twelve years older than me and didn't even have his PhD yet. We were two odd birds. Imagine: nobody bet on us. We weren't the most famous, not the most cautious. But we dared to ask huge questions, perhaps because we were too young to be afraid. You know, sometimes not knowing it's “impossible” helps a lot in doing it.
We were too young to be afraid of the impossible.
—What's this story about a pub where you shouted your discovery?
Ah, the Eagle! It was our pub, a stone's throw from the lab. On February 28, 1953, we walked in, and Francis, all excited, announced out loud that we had just “discovered the secret of life”! Picture the scene: people quietly drinking their beer, and this big talker announcing that we had cracked the mystery of heredity. The pub owner noted the date. That register still exists today. It was audacious, yes. But that day, for once, audacity spoke the truth.
We announced the secret of life between two beers.
—And the photo that helped you, what exactly was it?
It was the famous Photo 51. A strange image, made with X-rays: you bombard the DNA, and it draws spots on a plate. To a trained eye, these spots tell the shape of the molecule. And there, we clearly read a helix, a spiral. That photo was obtained by a researcher at King's College London. When I saw it, my heart leaped. Imagine you've been looking for a door in the dark for months, and a flash finally illuminates the lock. That was exactly it.
A flash illuminated the lock we had been searching for in the dark.
—But whose photo was it? Did you have the right to see it?
You ask the real question, my child, the uncomfortable one. That photo was the work of Rosalind Franklin. And I saw it without her permission, shown by a colleague. She never received official acknowledgment in her lifetime. Worse: she died of cancer in 1958, at just 37. When we received the Nobel Prize in 1962, she was no longer there, and the prize is not given posthumously. You see, a discovery is never the work of one person. We must name all the hands that helped.
A discovery is never the work of one person.
—Once you found the shape, what did it help you understand?
To understand how life copies itself! Our molecule has two strands, like two sides of a zipper that stick face to face. Each base on one side always calls for the same one on the other. So imagine: we open the zipper in two. Each half serves as a template to rebuild the missing half. We get two perfect copies! That's what we explained in our second article in 1953. That's how a cell transmits its instructions, without error, generation after generation. The shape explained the function. It was of a simple beauty.
Life copies itself like a zipper opening in two.
—What is the “central dogma” everyone talks about?
It's an idea that I, Crick, formulated. Imagine a recipe. DNA is the master book kept safely. You make a working copy, RNA, that you take to the kitchen. And with that copy, you make the dish: proteins, the real workers of the body. Information always travels in that direction: from the book to the copy, then to the dish. Never backwards. Later, around 1961, we even understood that bases are read in groups of three, like syllables. All modern biology rests on that.
DNA is the master book; the protein is the dish you cook from it.
—You wrote a book about all this? Were you criticized for it?
Yes, I wrote The Double Helix in 1968. I tell the whole adventure, without hiding our rivalries, jealousies, mistakes. Many people were angry! I was criticized for my harsh and unfair portrayal of Rosalind Franklin. In hindsight, they were right. But that book did one precious thing: it showed that scientists are not perfect statues. We make mistakes, we doubt, we squabble. Imagine, my child: behind every great discovery, there are very ordinary humans.
Scientists are not perfect statues.
—And after that, what greater thing happened thanks to your discovery?
The most dizzying is the Human Genome Project. In 1990, I became its first director, there, near Washington. The idea? Read the entire DNA book of a human being—all of it, letter by letter. Three billion letters! Imagine copying an immense library without missing a single one. In 2003, exactly fifty years after our little metal model, it was done. From two kids playing with cardboard to the complete reading of life. That's what a good question can trigger, if you follow it long enough.
From cardboard pieces to the complete reading of life.
This imaginary interview was generated by artificial intelligence from sources documented in James Watson & Francis Crick's profile. It dramatises what the figure might have said based on what we know about them, but does not constitute attested historical testimony. For primary sources and factual documentation, refer to the full profile.