One Medical Practice Could—Depending on How Rules of Thumb are Applied—be Valued at Several Radically Different Prices. Find Out Why! Paul Hyde, in a recent Around the Valuation World™ in 90 Minutes webinar, explained why rules of thumb are dangerous to rely on for valuation. The focus of his argument relied on six simple graphics that illustrated how the value of one hypothetical medical practice could—depending on how a rule of thumb is applied—be assessed at either $800,000 or $200,000 . . . or any number of different variations in between!