This is an I-Heart podcast.

Guaranteed Human.

Happy Saturday.

This week, we talked about rickets and vitamin D.

And we mentioned that in 1669, Hennig Brand figured out what phosphorus was by boiling urine.

A lot of it.

We have a whole episode about that.

It came out on April 29th, 2019,

and it is today's Saturday classic.

At the beginning of this classic, we talk about an event called Ba'a Fest.

It doesn't seem like there's been one of these in the past few years,

but there are still some videos from earlier ones available on YouTube if you want to check them out. So enjoy. Welcome to Stuff You

Missed in History Class, a production of I-Heart Radio.

Hello and welcome to the podcast.

I'm Tracy V. Wilson, and I'm Holly Fry.

Every year there's a thing in Cambridge, Massachusetts, called Bafeast.

It's held in other places, too, but the one in Cambridge on the MIT campus is the one that I go to.

It's the festival of bad ad hoc hypotheses. It's a place where people present their scientific papers. Except the scientific papers are fake and also funny and very well

argued and sometimes really plausible on top of being so hilarious. So like, for example, last time the winning talk was all about the role of noise in the

spread of bubonic plague in the 14th century, and it was accompanied by a whole lot of

pictures from illuminated manuscripts.

And I don't want to get into more detail than that because they put videos of all these

...