I noticed this feature in some Russian game developers with cyclical actions: you monotonously do the same thing (food, sleep, school, work) and think: “That's the end of the game, there’s no more interest to continue and here is BOOM!” A new ability has been learned or a new button has appeared somewhere, although it has not been there yet. And then you do the same, but once a day you click on a new button. A week later - WOW - the second button appears, and you are such "Yes, it can not be!" Because of this, you can safely spend two or three hours of your life and not even notice it. Mystery.