The hardware store guy in St. Louis showed me I was measuring wrong for 15 years
I was at Ace Hardware on Grand picking up some deck screws last Tuesday, and this older guy named Mike asked what I was building. I told him a simple planter box, and he looked at my tape measure and said 'you know you're reading the 32nd marks wrong, right?' I had been counting from the wrong edge for years, thinking I was fine. He spent 5 minutes showing me how to read it proper, and now my cuts actually fit tight. Has anyone else had a basic tool skill they somehow messed up for way too long?