Showerthought: my dad's old 'just get it working' advice doesn't fly anymore

I was helping my dad fix his old truck radio last weekend, and he said 'back in my day, if it powered on and made sound, you called it good.' That hit different because I just spent two days chasing a 0.5 volt drop on a G1000 bus in a Cessna 172. The plane would have flown, but the spec is the spec. Made me realize how much our job changed from fixing things to proving they're perfect. Anyone else have a moment where the old way of thinking just didn't fit the new work?

4 comments

4 Comments

jamiesingh3mo ago

Man, that reminds me of my buddy who works on medical gear. He said a tech from the 80s came in and was shocked they had to log every single calibration, even if the machine was basically working fine. The old guy said they used to just tap the display until the numbers looked right. Different world now.

paul_webb453mo ago

Wait, they just tapped the display until it looked okay? That's wild! I get that things were more relaxed back then, but we're talking about medical equipment here. People's lives could depend on those numbers being right. It's honestly scary to think about. I'm really glad they take calibration seriously now, even if it seems like a hassle.

daniel5111mo ago

The tapping thing is wild, but I've heard stories from old-timers in all kinds of technical fields who did similar stuff. Like, they'd give a monitor a smack to fix the picture or whack a vending machine to get it working again. I guess the thinking was, if the numbers looked right on the screen, then the machine was probably doing its job (and nobody wanted to spend hours digging into the wiring). Still, it's nuts to think that same logic was applied to something like a heart monitor or anesthesia machine. We've definitely come a long way from "if it looks right, it is right" to actually trusting the sensors.

wesleypatel1mo ago

That's not quite right about the tapping thing. I've talked to a few old biomedical techs and they said it wasn't just a visual check - the tapping was actually a diagnostic trick. They'd tap specific spots on the chassis or circuit boards to see if a loose connection would cause the display to wig out, which told them where the problem was. So it was more like a crude troubleshooting method than just hoping it looked okay, though I agree it's still crazy to use on a heart monitor.