Originally Posted by Seattle Forrest

Nobody hates you, or your opinion. People disagree, that's very different than hate.

Bathroom scales can't actually measure weight. They measure deflection, caused by weight. Most people would say that's a distinction without a difference, I bet you're one of them. Power meters measure deflection caused by force, and they measure how quickly and often that force is being applied. Know those things, and you know power with absolute certainty. That's why a lot of PMs can deliver accuracy and precision with with a maximum 1% error.

Air pod meters are not doing the same thing. They're measuring one of many things needed to derive ("back into") power, asking a couple other, and using standard assumptions about the rest. It's more like trying to guess what a person weighs from their clothes size, except even less accurate. What's the maximum error spec for a PowerPod?

A bike example. You can use a power meter to do aerodynamic testing. A PowerPod doesn't know if you're sitting upright in parachute pants or wearing a skin suit riding on the aerobars.