Ron's Brilliant Theory.

Anyone who lives with a guitar player knows: you WILL find guitar picks in your laundry. It's just a fact of life. Just as socks will disappear in your laundry, so guitar picks will appear.
Mr. Ron Lange, a very cool man, has a brilliant theory.
I always assumed the missing socks were due to gremlins, or the washing machine eating them. The picks simply were left in pockets.
Absolutely not.
Due to the heat, pressure, and chemical compounds introduced by the laundry detergent, some socks randomly undergo a fascinating transformation, no doubt similar to that taken by carbon when pressed into a diamond.
Doubtless scientists will get wind of this and study it soon.
The socks are not eaten by the washing machine, nor are the picks randomly generated by it.
The picks ARE the socks.
After having undergone a marvelous change, the former socks make their way into your laundry under the new identity of a guitar pick.
This explains so much.