Some errors are terribly hard to discover and correct during one’s own lifetime, just because one is so invested in them.  Change cannot come until the next generation.  The natural consequences of these errors are the feedback loop.

However, correction of errors doesn’t always happen even in the next generation, because if their natural consequences are delayed – and delaying them is what modern culture is about – then the next generation may be even more deeply dug into them than the last.  Until, like a shattering hammer, the return sweep of the pendulum finally hits.