Hannah Fry

But if you swapped over all of it, the whole lot...

I don't know.

I think there's a chance you'd completely disintegrate.

There wouldn't be a you left.

Would you suddenly absolutely despise olives and love chili, you know?

I mean, you could hypnotize people into being colorblind.

No!

Permanently or as a temporary... I mean, you gain one thing, you lose another.

I have a question about that.

Does it happen in a way that people notice it?

Because the thing is, this is the thing that I find gives a real insight into the hard problem, is that a lot of people who are colorblind do not know that they are colorblind at

Sometimes ever, but often until later in life.

And that, I think, is very interesting.

That, I think, really demonstrates.

Because this is something that is testable.

This is something that you can recreate so that we can understand how it looks for different people who suffer from red-green colour blindness, for example.

And it's so fundamentally different to the experience of the rest of us.

And yet you can go through your life having conversations with people the entire time and never know that you were viewing the world in a fundamentally different way.

My brother-in-law is kind of blind and, um,

And so for Christmas one year, I made him a t-shirt where I did one of the, you know, the colorblind tests where you have all the dots and it's one color against the other.