Roger Penrose

speaker

1,638 appearances 2 recordings 1 series first heard Aug 2025 last heard 3 Nov

Roger Penrose’s voice in public audio — every appearance, attributed to the second.

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Recordings per month over the last 12 months — 1 in all, peaking in Nov 2025 with 1.

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Theories of Everything with Curt Jaimungal · Roger Penrose: Why The Big Bang Was Not The Beginning · 3 Nov 2025 podcast

At both ends, the

The conformal structure of space time is the relevant thing.

conformal structure to get an idea it's useful to think of these Escher pictures with infinity see angels and devils and they crowd out along this circle boundary r which

Represents infinity, and this is a conformal representation.

Now the same thing.

applies, I claim, to the universe as a whole.

And our remote future was

Is a situation Gee, I'm arguing that there are two times, if you like.

When the

Each at each of these times mass becomes irrelevant.

One of them is at the Big Bang, huh?

Mass becomes irrelevant because the temperature gets so high that

that the particles move around so fast that the mass contribution becomes trivial.

I mean the the main contribution is the kinetic motion and the actual rest mass of the particles.

becomes less and less important the closer you get to the Big Bangs you go earlier.

So that's a situation in which mass becomes irrelevant at the beginning.

And another place where mass becomes irrelevant for a quite different reason is in the very remote future.

And then I won't go into the reason in detail.

Um that sort of shifted with for my early arguments.

But the massive particles, the mass term

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