Sometimes the most unexpected things happen

Movement nudge, hand mobility! 🙌

1) do this even if you're under 40. seriously. I definitely should have been doing something like this for years and I only turned 40 a month and a half ago

was recently made aware that people think air conditioning pumps in air from outside. Cars are a bit different because they have a closed cabin mode but air conditioners work by using a heat exchanger and fan to recirculate the air in a space over and over until it gets to the desired temp. if it pulled in outside air it would either struggle to keep the temp down or not work at all

There is an exception to this, and it's single-hose portable AC units (the kind that sits on the floor and has a hose going to a window panel). The hose isn't pumping outside air in; it's pumping inside air out (after using it to cool the compressor), but the net effect is the same. The air has to be replaced, so external air finds its way in through the gaps and cracks and window edges. This is why single-hose units are less energy efficient and less effective than dual-hose units. They can still cool a small space pretty well, so they're great for small apartments, but it costs more energy to do so. Dual-hose units are exactly as OP said; they pull in outside air, use it to cool the compressor (i.e. absorb the heat the compressor has pulled out of the inside air), and pump it back outside.