In Go, (and in competitive Starcraft, I've noticed) they talk about "overplay", making a move that's trying to claim too much, biting over more than you should be able to chew. And if you spot it, and are good enough, you can "punish" an overplay. If you are playing with a handicap, you have to make overplays, and hope your opponent can't punish them. As the weaker player in a handicap game you know this, but you face a constant dilemma: do you think you know how to respond and punish, or do you play carefully, sacrificing a little of the edge of your handicap? What's best depends a lot on your confidence in your own strength.

Now in Chess, it's much harder to see what's an overplay or not, especially for us who aren't GMs. But the basic thing exists, it exists in all games. Players still have to make decisions about whether to concede a little of their edge (it starts off with white, but can change across the game) with a safe move, or go for a potentially risky counter.

Now imagine what suspectimg your opponent might on decisive moves have engine help, does with that dilemma.