While I agree 99% with you, here's a story that happened to me: I was about the go to a summer school on computer science research and the organizers have set

While I agree 99% with you, here's a story that happened to me: I was about the go to a summer school on computer science research and the organizers have set up a mailing list in advance. People generally wrote friendly introductory messages, but there was one guy who seemed totally incoherent. He was like: 'yo gouys, hope too c u soon, i wil com by trein, ll ariv at 7, rlly xcited'. I was about to send a reply and lecture him that writing in this way was disrespectful and annoying, but luckily I was too lazy to do it. When I eventually met him, it turned out that he was completely blind (since birth), managed to go through school in a really unfair school system (mostly with the help of a few good friends) and went to college to study computer science and he uses all sorts of inadequate tools to type and use the computer in general. Turned out he was an extremely intelligent person, able to visualize and solve differential equations in his head that I could not work out on paper, and in all fields he was very knowledgeable and articulate. I wish I could say that after this event I'm more careful in summarily judging people.