Wrong, But Useful: Episode 18
/podcasts/wbu18.mp3
An interview special, featuring our favourite Abel Prize nominee, @samuel_hansen!
Sam is the brain behind Relatively Prime  which I consider some of the greatest maths radio journalism ever made ((I know, small pond)) and respectfully requests your donations towards it. It’s the only thing he’s ever done respectfully, so pay attention. You can donate here  he needs about £10,000 to make a full series, but he’ll be grateful for anything you can spare.
But we start, as we always do, with @icecolbeveridge and an unusually quiet @reflectivemaths exchanging pleasantries.
 Dave is not entirely happy about going back to school, and Colin is looking forward to some RI masterclasses he’s giving in the autumn
 Dave has a new popshield!
 Interview time!
 Sam has some exciting news for us: Relatively Prime is coming back, fundingpermitting! Back it at http://relprime.com/kickstarter from September 17th
 He need $15,000, or about £10,000 GBP, to cover his expenses
 The new Relatively Prime will have (at least) eight themed episodes, including on mathematical metaphors, the maths of cities, and following a paper’s citation branch
 The previous RP also had eight themed episodes, including one on music, one on draughts ((checkers, for our American cousins))
 Sam cites his main influences as RadioLab, On The Media, 99% Invisible and the rest of Radiotopia, among others.
 RP is available under a Creative Commons Attribution, ShareAlike license, so you can remix it if you like (as long as you credit Sam and use the same license)
 There are loads of rewards for donating
 Sam has a puzzle! (Hint: it might not be a serious puzzle)
 Did Sam condescend to Tim Gowers?
 Sam’s RoadToWembley plan for maths
 We have a little dig at Dave, for the sake of form, and mention @peterrowlett and @stecks’s new podcast
 Dave volunteers to be on the TMF podcast
 Dave’s post with a triangular prism of advertising on it (Colin says circumference, corrects it to radius, but means diameter. Good work, Beveridge.)
 Colin leaps to the defence of formula triangles
 Colin squares 34 and 67
 Dave talks about following rules
 Colin gives the answer for last week (an upside down 87) and is annoyed that nobody explained why people say they’re bad at maths.

Dave’s question: how do you get someone to write 5,417,632 without showing them anything or mentioning the numbers?
 Dave doesn’t understand why we have a “What we don’t understand” section. Any ideas?