People can be convinced, anytime with less effort.
But smart people cannot be convinced easily. Smart buyers take their decisions after hard work of marketer.
Difficulty level of convincing gets increased when we move from ordinary people to smart people to boss to managers to storytellers to leaders.
The more simply you get convinced, more you are down in the system. The more you are harder to, more you up.
There’s a trap: Not be convinced doesn’t mean you should not listen. You should. More than what someone is saying. But to be convinced, you might want more perfection, better invention, better idea or a better story.