Used to think a crimp was a crimp as long as the tool closed all the way. Spent like ten years doing basic aviation work and never looked close enough at my own pins. Then one day I had a flap position sensor acting up on a 172 and the same thing happened. Old guy next to me just squinted at it, handed me a 10x loupe, and said look at the barrel. First time I ever saw the strands sitting loose like that. Now I check every single one with a magnifier before I shrink wrap it. Still makes me cringe thinking about all those earlier connections I thought were fine.

So you're telling me the dimmer was all the way down the whole time and you guys just never thought to look at the wall switch? Not judging, we've all been there, but that's wild. Did you ever try turning it up earlier just to see what would happen, or did fear of blowing the speaker keep you from messing with it? Also, was the dimmer even labeled or was it just this random knob with no rhyme or reason? I gotta know if there was any clue at all before you finally spotted it.

Ever had a buddy end up using a blowtorch to peel that crap off Sheetrock?

Ah man, I gotta disagree with you there. I've had way too many Sundays where I showed up to like ten garage sales in a row and came home with nothing but a sunburn and a bag of regret. The whole "good stuff finds you" thing only works if you're already lucky, and I'm not. I've tried the "just show up more" angle and it just means I've spent more money on gas and overpriced junk I didn't need. Maybe the regulars you're talking about have a better eye or a better neighborhood, but for me, it's mostly about timing and dumb luck, not some magical vibe.

Wear on the treads is actually the building doing you a favor. That wear pattern tells you exactly where everybody walked, what side they favored, how they carried their loads. The steel beams staying solid is just good engineering, they were overbuilt on purpose. But the worn treads are the real lesson, that's the stuff you can measure and learn from. Next time you're doing a repair, look for the wear pattern first. That'll tell you more than any spec sheet ever will.