One change at the bench and suddenly everything's fixed? Come on. I've seen this movie before. You probably just got lucky with that batch of board or the glue was fresher that day. Give it a few more books before you go telling everyone you cracked the code. Corner work is fussy stuff and one good run doesn't mean much. I'd want to see it hold up across ten or twenty binds before calling it solved.

Waved at your own reflection? In the mirror doors? That is killing me right now because I would have just stood there frozen and then gotten off on the wrong floor out of pure shame. Fifteen floors is way too long to stand next to someone in total silence though, so I kinda get why you started doing the floor announcement thing. But announcing floors out loud like you're running the elevator yourself is sending me, mostly because I can picture everyone just nodding along like this is normal now. I bet half your building thinks you work there or something. Now I kinda want to try it just to see what happens.