NO ONE CAN TEACH SOMETHING DIFFERENT THAT U DONT KNOW. I MEAN IF U CAN UNDERSTAND U ALREADY KNOW IT BEFORE U UNDERSTAND AND U ONLY NEED TO TRIGGER IT LIKE A STONE TRIGGERED ON THE EDGE OF A CLIFF. SO FIRST STOP BLAMING U R SELF AND START THINKING THAT IF ONE MAN CAN UNDERSTAND THEN ALL THE OTHER CAN ALSO UNDERSTAND BUT IT DEPENDS ON THAT PERSONS INTEREST. AS EINSTEIN SAID EVERYTHING IS RELATIVE , U R KNOWLEDGE AND ABILITY ALSO RELATIVE BUT THE PROBLEM IS WHETHER U KNOW IT OR NOT. + more - less