Buffett's Value Formula (?)

Buffett's Value Formula (?)

Warren Buffett hasn't exactly published his formula for what he calls the intrinsic value of a company, but he has dropped a number of hints. He apparently multiplies estimated future earnings by a confidence margin between zero and a hundred percent (a bird in the bush being worth 0.5 birds in the hand, and all that; bush birds are the earnings you hope for, and hand birds are the earnings you're confident will materialize). He then compares these probable earnings with something he has total confidence in, by using a U.S. treasury yield as his discount rate. In calculator form it looks like this:
http://www.moneychimp.com/articles/valuation/buffett_calc.htm