i was just thinking...and its probably totally wrong...but ive asked my physics teacher and shes just like..."next question please"... if our eyes see things upside down but our brain interprets them the right way up (or is that just in babies??)...but yer if our eyes n brains do that...does that mean that really the world is like upside down or something and like in stead of gravity going downwards its really going ^^^ or like or its still going down but becasuse the world is upside down its realli going up?? i dont know i confuse my self!! but yer just wondering...and sorry if that didnt make any sence at all!!