Don't get too caught up on the definitions of words. What they are arguing is that many things have been attempted to rein in the tails, and they have all faile

Don't get too caught up on the definitions of words. What they are arguing is that many things have been attempted to rein in the tails, and they have all failed. An engineer has to look at a series of failures and find new solutions, not the same old ones that keep failing. Sometimes that means redesign from scratch.