To Teachers and to Students It will quickly become apparent on any e-mail group that not everyone has the same ideas or the same way of seeing things as you do. Since your own way of seeing things seems SO certain to you, at first you will think others must be very strange indeed, or not very bright. But this is usually an impression it is good to try to get past, since it is usually a mistaken one. Just try to realize that it is better to learn you were mistaken about something than to keep thinking something is true which is not. Further, personalities emerge after a while on e-mail forums, and you start to see traits among different writers that may be interesting, irritating, or just funny.
People even start to get predictable sometimes.
Try to find something interesting or humorous in the irritating traits so you can deal with them without becoming irritable or disagreeable in petty ways, and without becoming rude. If, instead of always being totally immersed in the subject matter of a discussion, you step back and look at the personalities as if you were studying human personalities for a psychology project or for a novel you are writing, you will find much to ponder, and much to laugh about. That will help you deal in a civil way with people you otherwise might not prefer to be civil to at the moment. Many e-mail friendships arise from disagreements that get resolved in a civilized manner between people, who at the time of their original dispute, would have never thought they could possibly like each other but who were committed to working through their dispute in a polite way. If there is something you don't understand, say so, and ask what it means.