By omission, yes. There are some things I don't particularly want to air in public, generally things which make me annoyed at myself.
By inaccuracy, yes. If I try to detail the same thing twice I can't guarantee to remember it in quite the same way each time - but the same goes for everyone, unless they've got a super-perfect memory, which I suppose is slightly more likely here than elsewhere.
By simple mistake, yes. I'm not above putting two and two together and getting five, then loudly announcing that five is the answer.
Deliberately, with intent to mislead (beyond just the omission above), no.
I'm certainly finding out new things about myself as time goes by - I'm still trying to determine the limits of my ability to visualise things and my ability to recognise faces - the first I've revised a little up, the second I've revised a little down. I would imagine that many people here, myself included, are unable to properly evaluate the level of many of our interpersonal skills - it's kind of a given!
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No one has gone missing or died.
The year is still young.