Why would it be different if the player had rolled a specific result, and as a result you knew there would be terrain or a situation that was logical?
It does not matter who made the roll, it's the purpose of the roll and what the roll represents. A sleight of hand to open a lock is simulating the act of picking a lock, nothing more. A random encounter roll is used to resolve uncertainty, a monster could be encountered in this area over this period of time but it is uncertain whether or not they will so we roll for it.
But that has quite literally been a core point for the thread for hundreds and hundreds of pages at this point. That it IS simulating reality, that it IS trying to do that thing.
Whether it works fine for what you want it to do is not the same as whether it is well-constructed for the purpose of simulation. As pemerton has now explicitly said just above.
D&D is simulating a world independent of but influenced by the characters.
 
				 
 
		 
 
		 
 
		 A good illusion can work on most people, but fail on a few. Like the example we had previously about how characters falling while climbing was immersion breaking for a player having other expectations regarding how unlikely it was to fall given more than average exposure to climbing. Maintaining the illusion of independence is indeed a group endeavour that has a subjective component. I think this is an important point you bring up, but it is a nuance I do not think changes the big picture.
 A good illusion can work on most people, but fail on a few. Like the example we had previously about how characters falling while climbing was immersion breaking for a player having other expectations regarding how unlikely it was to fall given more than average exposure to climbing. Maintaining the illusion of independence is indeed a group endeavour that has a subjective component. I think this is an important point you bring up, but it is a nuance I do not think changes the big picture. Thank you so much for your inspiring replies, and sleep well!
 Thank you so much for your inspiring replies, and sleep well! 
 
		 
 
		 
 
		 
 
		