The memories of most dreams I have vanish instantly or gradually over a few hours or so, so I can distinguish them from real events.
There's one event though, that until now I'm not sure if it was a dream or real.
Being my super-logical self -_-, I decided if I can't distinguish between memories of dreams and memories of reality once, then there will be other times when I can't tell the difference.
Usually the memory is of something good, like getting work done, or watching a show. But the day after, or some times, weeks after, I begin to doubt if it really happened, or if I was there when it happened, or if I was awake when it happened.
If someone I know saw me there, doing things I remembered, I can confirm both presence and wakefulness.
But if I didn't know anyone at the event, I can't confirm either, or I can't confirm wakefulness.
And I wonder, what if it's one of those dream-memories that stick for weeks, months or years, what if I wasn't really awake at that time? If the event really happened, what if I was present at the event, but asleep? And what if I dreamed--very precisely about the event, but it was only a dream?
I've tried to record events right after I see them to negate any future doubt, but I usually can't record the event as it is happening, because obviously and for good reasons there's no cell phones allowed during a show or movie, or because I feel I'm aware I'm doing the activity so I'm not recording it at the same time, but busy doing the activity. And I don't think I'll have any future doubts because it feels so real.
There's another thing---Usually it will take me a while to fall asleep so there's a definite break in consciousness, but there was one time when I closed my eyes for five seconds and then I woke up and an hour had gone by.
With such a short amount of time between wakefulness and sleep, I get afraid that I forgot if there was any lapse in consciousness or not and thus was actually dreaming when I thought I was awake---and therefore actually missed the event, wasn't doing the activity, was there but not awake, etc.
There's also no Inception-like 'tokens' I can use, because they also appear in my dreams after awhile.
Does anyone have any suggestions for proving that something was an awake memory and not a dream-memory?