This post is mainly addressed to the moderators, martina and I.M.: bobie is a new user who is regularly engaging in abusive behaviours, launching invectives all the time in his comments and answers. I believe it is time to give him a warning. Tools are available for use by moderators, when needed. So far relations within this community have remained civilised and mutually respectful: bobie will not change unless he will be clearly requested to do so.
How many more chances to insult other users will he be granted? What is the purpose of deleting his insults, after many hours, if he continues to add new ones anyway?
@martina Thank you for considering the situation. As far as I am concerned bobie's behaviour has already become an extreme case: in my opinion the user is a trained troll and the only solution is his exclusion.
The user has recently left several insults against me, all of them simply delirious and in cold blood: I have tried to talk him through it, I only got new insults. And at the end some of his contributions were deleted by himself, others were deleted by a moderator.
What he managed to do here is shocking: he has spent an entire day to try and prove that an impersonal verb is not an impersonal verb because it is an intransitive verb (pretty much like saying that a cat is not a felid because it is a mammal). I tried to explain that, I cited the most authoritative sources, and at the end he had the nerve to say that the problem was me, that I didn't let myself be convinced (!) and that he wouldn't communicate with me any longer (i.e., in the typical language of trolls, he accused me of dishonesty).
Here he stated that an interrogative clause was not such because it was a dubitative clause (pretty much like saying that a cat is not a mammal because it is a felid). I asked him for references, I provided references: he deleted his answer outraged! (For the record: the dubitative clause is a subclass of the interrogative clause).
Here, after my positive comment to his answer, more nonsensical insults followed, in cold blood. They were deleted, eventually. It is worth recalling that one of his comments in that occasion stated that his answers were all of high standards, and the reason why he got so many upvotes on that specific one was that it was the most stupid, i.e. he was implying that the people who had upvoted that answer, but not the others, were stupid because they weren't able to appreciate his high standards.
Here, bobie's answer is incoherent gibberish that has the only purpose to deliver his insults to the users who intervened before him: martina, you must realise that is the only purpose of the user.
In his comments here he intentionally lies providing a false representation of the facts, and alternates verbal abuse and utter nonsense.
It is a full blown assault.
He has made abusive remarks against other users, included DaG and giomasce.
This is a troll who knows very well his game. I ask the moderators to consider protecting firstly the site and secondly the users assaulted by the troll.
Please note that the manner bobie cites sources and other users is intentionally fraudulent. What is happening here has no excuse.