I was sliding it back and forth as fast as I could, because I didn't understand the puzzle at first, but then I saw there's an sorting optimization puzzle and thought that I was clever only to find out it's tedium.
Halfway through (or so I thought at move 80), I was just curious to see how ridiculously long the puzzle could be, shifting pieces back and forth
So the answer was: I thought the puzzle was easy, and I was humbled, and stubborn.
I solved it and wasted time, and used that time to warn others to not bother with the puzzle


I have a CO² sensor. When I sleep with the door shut, the CO² climbs up to and levels out at >1800 ppm.
I have a noticable headache the following day when I do this. I've tested it for nine days and now I've got a doorstop which prevents me from closing the door completely by accident or with drafts