Sounds similar to Smeed's prediction: > Smeed also predicted that the average speed of traffic in central London would always be nine miles per hour, because t

Sounds similar to Smeed's prediction: > Smeed also predicted that the average speed of traffic in central London would always be nine miles per hour, because that is the minimum speed that people tolerate. He predicted that any intervention intended to speed traffic would only lead to more people driving at this "tolerable" speed unless there were any other disincentives against doing so.