Daniel Whiteson

So what happens there is that we have two pillars of physics, quantum mechanics, which describes even little particles and how things move, and general relativity, which describes gravity and space and all that stuff.

Mostly, they don't intersect because you're talking about big stuff for relativity or small stuff for quantum mechanics.

Right.

But at 10 to the minus 35 meters, you need both of them.

And those two theories, we don't know how to get them to play well together.

Like there's no theory of quantum gravity that makes them come together in harmony.

They disagree.

They disagree by the nature of space, by the nature of time, about everything.

So we have these two pillars of physics and mostly they're fine, but sometimes they overlap.

And at 10 to the minus 35 meters, we don't know how to proceed.

That doesn't mean that there's no explanation for what happens below 10 to the minus 35 meters or that there can't ever be.

It's just like the current horizon of our understanding.

So you see people say like, that's the pixel size of the universe.

It's more like the limit beyond which we cannot predict with our current theories.

But tomorrow somebody makes string theory work or comes up with a new theory of quantum gravity that predicts past that point.

Boom.

Now we can see deeper into the history of the universe and into the very, very tiny.

So it's not a fundamental limit at all of our understanding.

It's a limit of our current theories, which, of course, are not the final story.

Is that a common opinion among physicists?