Not so much a word mechanics question as one of simple curiosity. I was raised in the '70s/'80s American midwest, went to a pretty good school, and was a very good speller (2nd place school spelling bee twice, lost to my best friend both times), and I swear I was taught that the word "dilemma" was spelled "dilemna". I now know this is incorrect, and that I'm not the only one. So, anybody else recall this? Anyone else have any theories on why it happened?