[pvg]

It's the E.P. Wigner thing in the first link, it's a famous essay and a bit of an HN evergreen, along with a related Hamming piece:

https://hn.algolia.com/?dateRange=all&page=0&prefix=true&que...

it's also a meme-ish title thing, sort of like 'considered harmful'

https://hn.algolia.com/?dateRange=all&page=0&prefix=true&que...