Sorry I didn't give you any praise for this comment back when you wrote it. Means a lot that someone else also recognises that idealism and imagination don't always square up with science. I am all for the whole 'learning by doing, even if it's wrong', but there has to be a balanced approach. To be honest I'd say that I lay on the line in that respect. Sometimes I make foolish newbie mistakes and other times I am logical in approach.