I did say twice that the teacher was responsible:
"Interpreting a question like this should be easy -- if it's not, then more than likely it was never explained to you properly."
"It seems clear that maths has been taught rather badly for some time now..."
Why not judge my ability to explain by the reaction of the person who asked the question, rather than someone who didn't? So far, whenever I've seen someone reply to my responses, they've said "thank you" for a clear explanation. Graham, who asked the question about inflation, said "Thanks jim, I think I understand more fully now". Psybbo, who didn't, got scared off. Well, if ever psybbo addresses a question to me I'll try to pitch the answer with a bit less science -- because I would want her to understnad. I want anyone to understand my answer, if they ask me. But because the levels are different, so too will the answers.
I've just come out of a session of teaching undergraduate students. I'll take their smiles and gratitude as a sign that, actually, I'm rather good at explaining things clearly at the right level for the person asking. I also spent a few weeks in a High School -- again, my explanations were met with nothing but smiles and gratitude, regardless of the level I was teaching at: from explaining how to use a protractor and measure angles, to solving problems in calculus, every single student I worked with was thankful.
For you to grab the response of someone who didn't ask and claim that I am then unable to explain things clearly is just wrong and wholly unfair.
I don't know if you are trying to be mean and trying to put me down, or just trying in your own way to help. Either way, I'd appreciate it if you kept your opinions about my teaching to yourself. If ever you ask me a question yourself, and if you then find my explanation unclear and unhelpful, then you can judge my ability to explain. Not before.