Thanks! Do you have a version of that talk published anywhere? I tried searching your YouTube channel [1] for a few things like "golden ratio" "ratio", "irrational"... but didn't find anything.
I only have one video in my channel ... never really got going, but I keep promising myself I'll start doing more. My channel is here:
https://www.youtube.com/@ColinTheMathmo
I don't have that talk on video, but I can probably sketch the content for you if you're interested, and then give pointers to pages with the details.
How to contact me is in my profile ... I'm happy to write a new thing.
Yeah, maybe I'll hack out a sketch tomorrow, show it to a few people, and get them to tell me what's missing so I can flesh it out.
I owe Chalkdust an article anyway.