Ok, it sounds like you're not joking. The 2.4 GHz frequency was unlicensed spectrum because it couldn't be used for other purposes (due to the interference). W

Ok, it sounds like you're not joking. The 2.4 GHz frequency was unlicensed spectrum because it couldn't be used for other purposes (due to the interference). Wifi originally used this part of the spectrum because it was unlicensed. There's a direct causal relationship between the interference being "considered acceptable" and your wifi both existing and being janky when the oven's on. It's also why garage door openers are (were?) on that frequency.