Our perceptions, our recording of events, personal events are often different from another person who is there, involved in the same event.

Especially if that event is your own behaviour.

Just think about it, it's obvious that there are at least two true versions of the event.

One is yours, from your point of view, literally, from your shoes, eyes, ears, feelings. It is not only a completely different set of recording devices from the other person, it is also in a completely different viewing point form the other person.

From 2 or more perspectives, there is no single truth, not unless you could join up all experiences.

If you are standing at a bus stop, with your pal, and you see a red bus, your pal sees a red bus too. But his red bus is, his red bus, and yours is yours. There are two red buses, both different but similar.