I think you have the right idea, but technically, all socks originally have one hole--to insert a foot or... anything else that can fit in there. During the dry cycle, matter is agitated in such a manner and combined with the electrical static energy build-up from friction, that the hole of one sock swaps with another and the rest of the sock with the other. So, at one moment there is a sock made entirely of the holes, i.e. nothing, and one sock becomes an "infinite sock", i.e. having no ending or beginning (no holes). Since neither sock can exist inside this finite space & time reality, reality forces them to coalesce (much like nature does to a vacuum). However, in reality's reaction to the 2 anomalies, some energy is expended and as such, only one sock survives. It has been noted, on few occasions, that the expending of energy in this process causes some unusual side effects such as additional small holes in surrounding socks, belly lint, and sightings of Schrödinger's cat.