Rows have numbers, columns have symbols. The person is supposed to sit in the seat in row 79, column ‘bumblebee’ or whatever.

I’d assume the arrows move the person to a different seat. The screenshot shows the solved captcha.

The spec is fairly complex. Someone ported Doom to PDF, for what it’s worth.

That doesn’t make PDF an inherently dangerous filetype, but I’d say it increases the likelihood of bugs/zero days within the PDF viewer.

So what would the cats choose in the wild?

Canned (and cooked) tuna, mussels, shrimps, reindeer, rabbit, beef etc of course. /s

Given that pretty much everyone just buys canned pet food or kibble at the store, and most of those are made out of whatever is left over after slaughtering animals for human consumption, the whole point of “forcing your cat to eat against its natural habits” is somewhat moot.