All the following is simply my own opinion (to save me typing IMO over and over again).
With all due respect to previous posts and posters, my own opinion is that Jacob went FAR beyond what could by any standard be reasonably referred to as "play ground stuff".
As sunnybob says, Jacob was a troll, and quite happily admitted that. (BTW, I understand on good authority that Jacob did NOT identify himself as "Forum Resident Troll", the Forum software and/or the Mods did that for him).
And it's completely correct to say to yourself "just don't feed the troll" - in NORMAL circumstances.
BUT if we accept that one basic definition of a troll is someone who goes out of their way to deliberately provoke arguments, then not only did Jacob do that, he also went FAR beyond that definition.
Andy T has managed to find 1 post by Jacob (just ONE???) where he has apologised, but nobody will deny that any apology/ies by Jacob were VERY few and far between. Not only that, 99.9% of the time his ONLY response to any criticism, or to anyone else expressing any differing view to his own, was to personally attack the dissenter, very often in a highly destructive and highly offensive personal manner.
In short Jacob seemed to positively enjoy deliberately issuing "personal hurts" to other members, and that clearly with deliberate malice aforethought. That suggests to me a person who has a defect within his physiological make up. Someone who "gets his kicks" from deeply hurting others is to me just "defective" in some way.
As such he is perhaps to be pitied rather than condemned, but nevertheless, I for one am perhaps even less generous of spirit than even Jacob was in this respect - I never have accepted the Christian parable of "the prodigal son" and there comes a time when I simply have to stop "turning the other cheek".
As said, his behaviour often descended FAR below a level which could be accepted in any playground - or indeed in any "civilised club", internet or otherwise (which is what UKW is to all intents and purposes).
Although I have previously conceded that he had a good level of knowledge of "traditional woodworking", he consistently outweighed that benefit to us all by his totally unacceptable behaviour - a behaviour which, even with EXTREME patience and latitude allowances on their part/s, often needed correction by the Mods.
In short I'll sum up Jacob and his contributions to UKW as on balance totally negative and I for one will most definitely NOT miss him. I sincerely hope he never comes back here, but if he does, then I'll have no problem whatever in living with his presence. It will simply be much easier and more pleasant not to have to do so.
One final point. It seems to be the case that we don't know for sure if he's been banned or not, or if so, for how long. Be that as it may, as far as I know, no individual needs to be a registered member or to log in here to simply read posts on UKW - anyone can do that simply by being on line, and I assume that would include any banned member as well.
If so, it's quite likely that Jacob is reading all this now. If so I'm pleased, and if not I hope he does start reading here soon. Because I for one am not in the slightest bit reticent to say all this to his face.
But I very much doubt that he would be able to learn anything from it because, as said above, Jacob has plainly and consistently exhibited a fundamental flaw in his character - no sunnybob, (and the rest of you), NOT simply by stirring up arguments just for the hell of it, like your comic-giving Uncle, but only to try his very best to viciously verbally assault other people.
Long may his absence continue - "a thoroughly nasty little piece of work".