이 름 전자우편 홈페이지 제목 비밀번호 (최소 4자이상의 영문 또는 숫자) Liz, mine was also supposed to be about whether we do too much for our own good but yours is a BRILLIANT way of putting the problem - and the solution! Go you! Fab fab post. I'm useless at Maths but I always liked algebra and equations - this has got to be the first time I've EVER seen their application in ral life though!