I did not create the Forgotten Realms. Go read books, play other video games, watch films or read internet articles if you are not inspired.
Then come back and tell me if throwing a potion at someone's feet would heal him in that world, if arrows are creating a wierd arc when shot, if cows climb ladders, if meteo doesn't exist and if time is frozen, if after walking 6 minutes characters can see a druid grove + a forest + a village + a ruined temple, if teleportation runes are common,...
These exemples only exist in Larian's personnal representation of this world. Of course you can insist that it is indeed *the* world representation and how million other players are probably wrong !