I looked into method shaving, read reams of CAR's writing on the topic, and came to the conclusion that it's pure, unadulterated hokum, and the only reason it works is that it's hokum built around a working system: wetshaving.
The two major claims behind Method Shaving are unscientific at best, and completely inane at worst.
1. The best shaving lubricant for your skin is pure water.
All the evidence would point to many things being better, more lubricating, protecting, and cushioning to the skin than pure water.
2. Pure water is too volatile to shave with, so it must be made to "last" (i.e. "Hydrolast") with a minimum number of natural* additives.
Perform an experiment right now. Using your standard technique and two identical bowls, whip up a bowl of lather, and in the other bowl simply squeeze the water from the brush, along with any amount of water you normally add to your lather. Walk away for an hour. Come back. Which bowl is drier. Lather increases the surface area of the same volume of water by several orders of magnitude, dramatically increasing its rate of evaporation.
So, while CAR may know how to whip up a lather, and may even know quite a bit about shaving per se, he doesn't know what in the blue blazes he's talking about when it comes to the whys and wherefores of shaving media.
* Determination of whether or not there is a qualitative distinction to be made between a "natural" and an "artificial" ingredient by that criterion alone, given that strychnine is natural, is left as an exercise for the reader.
What colour is Aqua Velva? Hooloovoo, because it's hyper-intelligent!