Anybody can make a formula, doesn't mean it is right. Remember when all of the fish runs were exhasting in the not to distant past? Now they are coming back strong? Formula's can be wrong. They are nothing more than logical guesses. Kinda like flying over and counting crab or shrimp buoys to get the quota for the recreationals? Gee I guess the catch record card for crabbing showed this formula was flawed.