Is placing your speakers halfway between floor and ceiling a bad idea?

Is placing your speakers half-way between floor and ceiling a bad idea? In my last video I talked about finding the right size computer screen for your home studio setup (it’s actually a speaker placement question). As a follow up, our fellow no-voodoo brother Ben C. asked me what happens though when your room is exactly 8 feet high and you end up placing your speakers 4 feet of the ground, so exactly mid way between floor and ceiling. So often you read that you shouldn’t have your tweeters...