Here are two sides of the same coin.
1) The Training Chasm is "how do really change people's behavior in a formal learning program?"
2) The Life Chasm is "how do some people accomplish so much more than other's, even when they don't work harder, and really only make slightly different uses of the same basic tools and options?"
I think about both of those when I struggle to discuss the most critical part of a simulation.
There is the interface. There are the results. And then there is something in between - an invisible system. By mastering this invisible system, your actions in the interface lead to success, often through making unconscious trade-offs. By ignoring or fighting this system, you actions, ostensibly similar to the successful user, lead to failure.
Meanwhile, a lot of training talks about models, doing the right things in the order. They might even talk about how to theoretically attach actions to the model. But without practicing using this system, the concepts just as flat as with a tennis student who learns in a classroom, and then is forced to play without internalizing through action.