Everyone will react slightly differently to any given situation or surprise, because your reactions and expectations act as a filter to all external input that we receive.
Everyone filters the same information differently and interprets the same situation differently. This is why no two people and no two lives can be identical. We each have our own filter. Humans create the three dimensional hologram based on the input we receive from the hologram, a perfectly efficient feedback loop with no loss.
Within this hologram that we create, are other people creating their own holograms. People can share holograms with each other only if they are similar in some way, if they agree upon a portion of the hologram. On Earth, we all agree on three dimensional form, and we each have unique experiences within that form.