You just don't get it, Lon.
Apparently a LOT more than you do on any given next day (today). I've read well, pay attention, and remember as any good learner does.
You are an insulting little guy.
This is where you are illiterate, again, as another example. I diagnose. I make proper assessments. That you find them insulting? Okay, I guess, but 'illiteracy' isn't terminal when the remedy is simply 'read!' which I immediately posted in connection.
I'm a bit bigger than you are on several counts (not sure 'big' is any prerequisite for anything, other than reaching what you may be too short to reach yourself), and not really 'insulting' unless you cannot learn... At that point, unwilling to learn and grow, I'd understand the 'insulting' nature of the comment but it'd be a case of 'chosen' and 'taken' rather than 'given.' It means, you took an insult where assessment, perhaps a bit of correction was the intention.
People who can communicate effectively don't need to tell lies in writing to people such as 'you are illiterate.'.
Er, one period at the end of that sentence (I'll come back to this just for the example). Lies are either purposeful or from one who is ignorant, but it doesn't elevate the miss-truth in either case. You do not read OR communicate effectively. I have a bit of empathy as I'm not always on my game, but I do know what I'm supposed to write, to be literate and effective, I just don't do it as oft as I should (posting after a very long day of work etc.). <--Those two periods are supposed to be there, not like yours. Wherever we have a literacy problem, we don't have to take it as an insult. I'm not really a grammar-nazi, just using this opportunity to say there is no 'slight' in a correction, by any necessity. It'd be petty. Even for the right reasons, it may still be petty in a forum that isn't focused on English and grammar. It is simply a place 1) where we are needing to be more literate, or 2) simply a mistake.
Ignorant. Uninformed. Illiterate. Unread. While 'stupid' does fit some of these in definition, it tends to be a derogatory term so I try to avoid it. One generally cannot 'fix' stupid, but they can become informed, can become knowledgeable, can learn to read where they've avoided in the past, etc. Asking someone who is illiterate to read, is no poor slight. It is asking them to fix something neglected in their character and/or habits. It can truly lead to a good outcome.