I find it annoying when I take a bit of care about pointing out what I see as a flaw in some point of view, or a factual error and a few posts later someone pops up making exactly that same point, or that factual error - I don't mean disagreeing with me, and pointing out where I've got it wrong, because that's fine. I mean coming up with exactly the same point as if they'd just thought of it for the first time.

It reminds me of what I once did in a singaround where I goofed off and lost all concentration, and asked someone to sing a song that they had just finished singing...

But I like to look for explanations that avoid fights - and one thing that sometimes happens to me is that I write a post - and then I find that it won't load for some reason, congestion on the wires somewhere, I suppose. So sometimes I just save what I've written to my disc, and load it the next time I log on - maybe without bothering to read the messages that have ben posted in between. (And the reason that happens is because I haven't refreshed the thread page that's on my screen atbthe time I reload my message.)

And the other thing that happens is that when a long thread gets retired by a "part 2" thread, and you get pulled into it at that stage,it's very easy not to go back and read the earlier thread, especially if there isn't a built in link.