Thanks in advance to all who reply. Forgive me if this naive, I am not scientifically inclined, but I am VERY curious. After re-watching a documentary on quantum physics, I have a "thought experiment" that I would like feedback on. Maybe this experiment (or something like it) has already been done. What if the double slit experiment was conducted for 10 days. Each day, a device would RECORD activity at the slits and store the data to a new thumb drive. Another device would RECORD the patterns on the "back wall" and store that data to a DIFFERENT (new) thumb drive. NO HUMAN will "observe" the experiment during these 10 days, or exam what has been recorded on the thumb drives. At the end of each day, both thumb drives are labeled (ex "Day 1 - Slits" and "Day 1 - Back Wall"). At the start of each day, a new pair of thumb drives is used. On day eleven, the 10 pairs of thumb drives are lined up on a table. Five of the pairs are "randomly" selected, and the "slit thumb drive" of each selected pair is completely destroyed, having never been examined by a human. If you then examine the "Back Wall" thumb drive fore each of the 10 days, would there be any difference between those that no longer have a "slit thumb drive" in existence (and can never be "observed" by a human being)?