like come on bro in three years you know *nothing* about the shimmer? you couldnt just lock a pig in a cage three feet inside the shimmer and tie a rope to it to yank out after a week and see what happens? or park some machine inside and let the cord run back to home base?

i think the movie intentionally didnt resolve any of those obvious questions so that way the main characters could make those discoveries themselves on their journey but i was being a poindexter about it the whole time i was watching