I had fun joining some students at Khan Lab School for their fledgling podcast. My main regret is not taking more of an effort to turn things around and ask them about their high school experience.

youtu.be/-qsAXSUXXHo?si…

I had the joy and the honor of being invited to give the Harvey Mudd College commencement address this year. In the vector space of all advice, I explore a 5-dimension subspace orthogonal to the “follow your dreams” vector.

YouTube Link: youtu.be/W3I3kAg2J7w

What's the correct number of times to include the phrase 'orthogonal subspace' in a commencement address?

Sure not 0.

Last week Matt Parker had me join one of his 'Evening of Unnecessary Detail' events in New York. I invited 🎵 Tim Blais 👨🏻‍🔬 to come down and we had a bit too much fun writing a parody of 'Ain't No Sunshine' about the twin prime conjecture.

youtu.be/djzKCZHeVjY

nice argument, unfortunately i have drawn myself as the clever brown pi and you as the befuddled blue pi

When I did the lockdown math lectures, I was working with some friends who put together a tool (Itempool) to do the live polling and organize question banks, which I've enjoyed using since in live talks. Sadly, they've now shut that down.

For anyone out there who was using it,

I was curious how DALL-E might render a pi creature, and its true preferences for tau were revealed. And on today of all days!

(Then again, maybe it's on me for the typo)

The Matt Parker pi day video this year was truly something to behold. I think I was smiling cheek-to-cheek the whole time.

youtu.be/LIg-6glbLkU

This Numberphile podcast with Christopher Havens, who started the Prison Mathematics Project, is an especially good one.

youtu.be/DPyWf4cI548e

I like what they're doing, and just made a contribution to their winter fundraiser, and thought I'd briefly signal to boost it here for anyone

If you're attending the JMM this week and have any interest in meeting up, let me know!

Product idea: An app/website that's identical to YouTube in every way, except without any shorts.

Following up on the recent video about the refractive index, here's a video answering a few viewer questions.

How the refractive index can be less than 1? What's going on with birefringence? And more

youtu.be/Cz4Q4QOuoo8

I realized recently I didn't know why prisms work. Like, why does light slow down? And why would that depend on color?

It turns out, answering the first question with enough detail automatically answers the second, and it's completely delightful.

youtu.be/KTzGBJPuJwM