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.
Trend
recordings per month · last 12 monthsRecordings per month over the last 12 months — 1 in all, peaking in Nov 2025 with 1.
Appearances
It's a good question.
I think I'm glad I did.
But it came about mainly from
Talks.
You see, th th this was one of the three courses I went which were nothing to do when I when I was
a graduate student in Cambridge and I went to three courses that were nothing to do with my subject.
One was by Herman Bondy on general relativity, one was by Paul Dirac on quantum mechanics.
big influence on me clearly.
And the third one was about by a man called Steen on mathematical logic.
And I learnt about the Girdle theorems.
And I found it absolutely stunning.
because I had sort of vaguely heard that Girdle's theorem showed that there are things in mathematics you couldn't prove.
I didn't like the idea very much
But then when I heard what it actually said, I found this stunning.
Because what it says you make a sentence, and this sentence says you have to it's clever to make it do it, but you make this sentence say, in effect, I am not provable by those rules.
And that's what it says.
So you say, Well, maybe it's false.
And if it's false, it is provable by the rules.
And therefore it's true, and not provable by the rules.
Amazing.
Showing 321–340 of 1,638 · page 17 of 82
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