if you ever actually look at the fuckin mains electricity wave, its never a sine wave, its always something fucked up like out of a korg DW-8000 or a kawai k3. its full of really fucked up shit. why dont they fix it. its probably making all those electromechanical clocks at provincial railway stations run at 7x the correct speed and nobodys even noticed. and if u think thats bad u should see what comes out of a car inverter