Venki Ramakrishnan

You could replace the engine.

You could replace the wheels.

You could replace almost every piece of the car.

So you could say, yes, there's wear and tear.

But if you're able to regenerate it,

replace it with new parts then you can keep it going forever and the question is whether it's the same thing or not whether the same car if you've replaced everything about it and

Many people would argue if you replace it very gradually, then it really is the same car.

Perhaps a better analogy is an orchestra.

Let's say the New York Philharmonic.

Individual members come and go.

They grow old, they retire, or sometimes they die.

Conductors come and go.

But the New York Philharmonic survives.

It's still the New York Philharmonic.

It keeps on playing.

And so,

there are different ways of looking at what it is about immortality now the question is can we replace everything about ourselves at the moment we're nowhere near it is anyone even trying i mean is there is that a sciencey thing that people are attempting to do even though it may be very preliminary

There are scientists who are trying to reprogram cells to try and make older cells go backward in time so that they can regenerate worn out tissue, regenerate aging tissue.

That's all working at one level, but it's not working at the level of the entire individual.

People have done this in mice.