Yes. It's like if you're on a ship and you see an iceberg in the distance. If you shout iceberg, and change the direction just a little, no crisis. Without that small change, big problem.

People were talking about Y2K years ahead of time. Lots of changes to code were made. A few little bugs slipped through, but not many, and everyone knew how to fix them. No crisis. Without the many code changes, big problem.