Thanks for pointing this out. It's the first time I'd noticed this small but very information-rich button in the wild. I notice that "past" is also present in

Thanks for pointing this out. It's the first time I'd noticed this small but very information-rich button in the wild. I notice that "past" is also present in another evergreen posted today, the one on crowd dynamics (https://news.ycombinator.com/item?id=10488996 https://news.ycombinator.com/item?id=10488996).