Thermometers

It looked slightly more like three people crawling in an earlier version of this puzzle, but I’m keeping the name.

It’s a computer chip. Or a mockup of a computer chip. Transistors, traces, and so on.

Some people seem fixated on Inuit people having many words for snow, but English does too! From blizzard to whiteout, with flurries, graupel, and drifts, we have so many words. The one this puzzle’s palindrome lines make me think of is sleet.

It may seem like a lot of constraints, but it's a Samurai Sudoku, so you should only have deal with one or two at a time.

Not a commentary on computer operating systems at all.

Temperatures rise in much the same way wet paint does not. This puzzle is as easy as watching paint dry.

Someone might have been born in 1972. Maybe. Or there could be some other reason that’s a good year. It is, though.