1)"Notice that bandits haul a wagon with a crate to carry their spoils about rather Invisible Backpacks of Infinite Capacity."
2)in some interview Todd said that the game is so full of content that even some of the game developers only know about 70% of whats in the game, and its almost impossible to see everything the game have to offer.
3)Hear a bandit singing to himself because he hasn't noted your presence yet.
4)People cough.
5)The game is so detailed that you can even see a tiny army of ant-like creatures circle a treestump.
6)Kill an Elk and get his antler as a trophy and hang it over your fireplace.
7)The world reacts to you, enter a tavern, sit down, and a waitress will take your order,pay for a room and the innkeeper will escort you to your room.
8)Find secret Stash from reading a note you find.
thats all for now if you like it i will add more, like i said it might not be new for everyone.