I love "In our time". When you said this I thought "I'll know if they're really serious if Tim Gowers[1] is one of the guests". Sure enough, he is. The BBC a

I love "In our time". When you said this I thought "I'll know if they're really serious if Tim Gowers[1] is one of the guests". Sure enough, he is. The BBC also had him on (the Today programme iirc but it was a while ago) the one time to comment when someone claimed to have proved it. [1] https://en.wikipedia.org/wiki/Timothy_Gowers https://en.wikipedia.org/wiki/Timothy_Gowers