The science in this case is common sense. I’m not going to go post a link or copy/paste the cdc recommendation that everyone wear a mask. You’ve seen that and apparently are still a flat earther. The only way to get the virus is for it to go into the 5 holes on your head: eyes, nose and mouth. Mask covers nose and mouth so just a basic rudimentary understanding of common sense would tell you it helps. Personally I wear a mask and a face shield to make sure all 5 holes are covered.
Look, I agree that everyone should wear masks. If two people are wearing masks, that should help lower the spread.
But anything I've seen is that the droplets are small enough to potentially still be breathed in through (or around) a mask, and wearing one helps to not let your own droplets spread out to a large area.
If evidence exists that we avoid spreading and contracting it via masks or face coverings, it needs to be put out there.
Example of evidence base, common sense measures--Heart disease and car collisions costs our country hundreds of billions of dollars each year, and there very easy ways to avoid those things, so common sense would be to take the proper precautions to avoid the financial burden and deaths from those things. Do we?
And don't call me a flat earther. Hurts my fee fees.