Weak signal detection

How often are we wise after the event? With the benefit of hindsight we see that we should have paid attention to something but at the time it seemed irrelevant. It may not even have been brought to the attention of the responsible executive as it was considered trivial. We may not have even seen the relevant data, even if we saw it then we may not have paid it much attention. Even if we or our subordinates pay attention getting people to act on something they did not expect or completely novel is problematic.