Neil Gershenfeld

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1,202 appearances 1 recordings 1 series first heard May 2023 last heard May 2023

Neil Gershenfeld’s voice in public audio — every appearance, attributed to the second.

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There are a number of inventors of 3D printing.

One of the companies spun off from my lab by Max Labovsky is Formlabs, which is now a billion dollar 3D printing company.

That's the modern version.

But all of that's analog.

meaning the information is in the control computer.

There's no information in the materials.

And so it goes back to Vannevar Bush's analog computer.

If you make a mistake in printing or machining, just the mistake accumulates.

The real birth of computerized digital manufacturing is 4 billion years ago.

That's the evolutionary age of the ribosome.

So the way you're manufactured,

is there's a code that describes you, the genetic code.

It goes to a micro machine, the ribosome, which is this molecular factory that builds the molecules that are you.

The key thing to know about that is there are about 20 amino acids that get assembled.

And in that machinery, it does everything Shannon and von Neumann taught us.

You detect and correct errors.

So if you mix chemicals, the error rate is about a part in 100.

When you elongate a protein in the ribosome, it's about a part in 10 to the 4.

When you replicate DNA, there's an extra level of error correction.

It's a part in 10 to the 8.

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