While I think this show is pretty good, it had things going on that left a bad taste in my mouth after the hype and excitement of seeing it had waned.

1.- What were those experiments they were trying before 11 was born? What was their purpose? 2.- What were they trying to accomplish with eleven? They clearly stumbled upon the "upside down world" and the thing inside it, but what were they hoping to accomplish then? 3.- Why was the thing unaware of how to enter this world until eleven made her presence felt? The monster started opening portals left and right once it knew where the other world was. 4.- Why wasn't there any evidence of the monster opening a hole in the house's wall when it scared the mom?