it does, there is no simple method like areas become less attractive if the trainer been there 1000x, the question is it possible to knock out of the the wild pokemon, its not and that's ingame pokemon illegal to, also I did explain its to the point of origin, whether if its actually a real pokemon area or just a lore cave, in this particular reason its grass and all grass is always wild pokemon, I gave ref to two other issues he/she can adhere to aswell such as pokemon to be seen in wild and pokemon that can only been seen certain times or days, not all questions are to the point neither. Also this answer could've been hidden and not downvoted, particular not bothered since I made the effort here and its not been read properly by others in my opinion.