My New Theory

Dryer lint is the failed attempts of socks to return from the other dimension in which they are trapped.

This explains the two things that are odd about dryer lint:
  • the color is of the lint is not related to what you are drying
  • despite removing massive amounts of dryer lint, your clothes don't seem to get thinner

Also, beware, people: it just cost us $83 to get our dryer fixed -- one of the protective thermostat thingies blew because our family members don't clean the lint screen at each use even though someone has been harping on them to do just that. Having a clogged vent pipe can do the same thing (as well as be a fire and carbon monoxide hazard)... we change our vent tube yearly, because it's the flexible corrugated foil kind that's easy to install but impossible to keep clean.