Mysterious 'Hell's Itch' Syndrome Afflicting Thousands In America
(wbznewsradio.iheart.com)
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If you don't understand how light reflects off surfaces, you probably shouldn't try to discount what someone is saying.
Single layer "summer" clothing does indeed have holes but still provides limited protection. I wear a long-sleeve shirt for most of summer and occasionally pull the sleeves down if I start to burn (which is admittedly rare).
Do you not understand how we perceive light? In order to see, we have to have light.
Things that cast a shadow do not block the light from the shadow, they reduce it. Light bounces in all directions, off of all surfaces, so by having a tight knit that don't allow UV rays through, you are protecting your skin from sunlight.
Shade does not block radiation. This is easily understood by people who aren't retarded because you can still see in the shade.
At night time, it is pitch black because the only substantial light you receive is reflected across the surface of the moon to varying degrees. And night tends to be darker than the shadows you're referring to.
It's honestly quite basic science that I guess they stopped teaching in schools.