196

That is not Sisyphus, it is Sisyphus' shadow on the wall of the cavern

His happiness depends on whether or not a radioactive substance in a box has decayed, which has a 50% chance. But since it has not been observed, he is in a superposition of happy and unhappy.

I'd imagine so

"the ultimate answer to life, the universe, and everything is… 42!"

there is no reason to assume this is not relevant for this case too

I can't know unless I open the box to check on a cat, but I can't reach the box because I only ever get half as close again as I was before.

There's a motel on a side path near the hotel, it usually has vacancies so Sisyphus may not be happy, but he will be sheltered at a decent price!