In one case we have members of the public who have passed a driving test. In the other, we have the foremost experts in the field, using the latest theories of risk, working with millions of dollars of modelling and statistical equipment, with their jobs on the line. For what good reason would a single one of them look at the reserve rate and say "Although the government doesn't claim that this is a safe rate for banks to operate at, but instead sets it completely arbitrarily, and admits to the fact that it's totally arbitrary, and has not changed this rate in several decades because it is an obsolete tool of monetary policy, I am nevertheless going to take it to 'suggest' a safe level of reserves, totally ignore all of my models and education, and just pick that number on a completely irrational basis."