Let me push back on this though. I knew a master colorist in St. Louis who used purple shampoo on reds all the time but only if they were a true copper or auburn with zero yellow in the base. The trick is you have to check the undertone first, because purple cancels yellow but it'll clash hard with orange tones if the red is leaning too warm.

like a science experiment" - guilty as charged, I definitely charted them on a whiteboard.

Oh man, that is such a great story. I had something similar happen at a random coffee cart outside a hardware store, where the owner saw me impatiently slamming my Aeropress plunger and just gently put his hand on my wrist and said "slow down, let it steep another 30 seconds." It blew my mind how much smoother it came out. That kind of random kindness from a stranger who actually knows their stuff is so rare and cool. I bet that pour over changed your whole morning, lol.

Oh man, that reminds me of the time I used cat photos to test a facial recognition app!

i read somewhere that those old encyclopedia bindings are often just glued anyway so cutting them is basically the same thing.