It always baffled me how people keep demanding "evidence" for the benefits of wearing masks when even a simple observation provides it. There's plenty of video

It always baffled me how people keep demanding "evidence" for the benefits of wearing masks when even a simple observation provides it. There's plenty of videos of experiments you can conduct yourself (like the the aerosol ones or just people trying to blow out a candle) showing how masks stop spreading the virus. Also, have a look at you own monitor screen. See all the funny, dirty dots? That's your spit. Does that compute now?