ITT: People misinterpreting the idea as “facts that your school taught wrong”, when it’s really saying, “things that have changed since you went to school” (either through a change in definition or by new research).

E.g. If you went to school before the early 2000’s, you were taught that Pluto is a planet, while that is no longer true since it was recategorized in 2006.

Not the Doppler effect, as that only applies to moving objects, but instead the inverse square law, where the energy of the sound wave decreases by the square of the distance from the origin, since it spreads in a sphere with the energy being spread across the surface of the sphere, resulting in a very quick dropoff in the loudness.

Can confirm that SAAB cars are great! Mine is coming up on 19 years old, and apart from some superficial issues still works as well as when it rolled out of the shop. SAAB was also very innovative with their cars, taking a lot of inspiration from their jets, which is clearly seen in their design.