If you liked this you might also enjoy this little toy project: https://blog.singleton.io/posts/2021-11-24-probabilistic-spr...

Thanks! I liked the implementation so much that I have made a python version here https://github.com/Topping1/probability-spreadsheet

I lived in London for a decade before moving to SF. SF is significantly more friendly, even now during COVID - walking along a random residential street, chances are > 1 in 4 that passersby will say "hi!" if you acknowledge them. This does not happen in London. Sure if you walk down Market you're unlikely to find a lot of folks wanting to pass the time of day but Market != SF

I have a Londoner friend I stay with there sometimes (I'm from the North of England).

I wind him up by threatening to walk around his neighbourhood being "weird and dangerous-looking" (his unnerved words) by using friendly eye contact and saying hello to people I walk by.

Londoners are famously brusque, no? Try holding up a queue and wait for the pleasant greetings.

Are there any megalopolises that don't have a culture of quick paces and impatience?

We're big on queuing

TL;DR The production environment contained ACLs not present in the staging or canary environments due to those environments being rebuilt using updated processes during previous maintenance events.