My uncle's advice about using a floor jack without stands almost cost me my hand
He told me for years that if I propped a tire under the frame, I didn't need jack stands for a quick brake job. I listened to him last Tuesday in my driveway in Fresno. The jack leaked down while I was reaching under the rotor. The tire wedge kept the car from crushing me, but my hand got pinched between the caliper and the rotor. Lost a fingernail and gained a lot of respect for physics. Anyone else ever get bad safety advice from a relative and just go with it because they seemed so sure?
The part nobody talks about is that your uncle probably wasn't lying, he just got lucky for 30 years and never saw the one time it goes wrong. That's how bad advice spreads in families, it survives on good outcomes instead of good reasoning. The tire under the frame did its job, but the real lesson is that a jack holds weight, it doesn't hold it safely.