Andrew Strominger

makes any sense.

Nothing could be self-consistent if there were objects that could exceed light speed.

And so in these very, very massive regions of space-time, even light cannot escape.

Yeah, that's incredibly interesting.

No, no.

So it's a very funny thing in physics.

The best discoveries seem completely obvious in retrospect.

Even my own discoveries, which of course are far lesser than Einstein's, but many of my papers, many of my collaborators get all confused.

We'll try to understand something.

We say, we've got to solve this problem.

We'll get all confused.

Finally, we'll solve it.

We'll get it all together.

And then we'll...

All of a sudden, everything will fall into place.

We'll explain it.

And then we'll look back at our discussions for the proceedings of months and literally be unable to reconstruct how confused we were and how we could ever have thought of it any other way.

So not only can I not fathom how confused we

Einstein was when he started thinking about the issues.

I can't even reconstruct my own confusion from two weeks ago.