They say 'what you don't know can't harm you.' That is patently wrong. Just as potentially damaging is what you do know - or, at least, think you know. Our opinions are often our enemies. If we form them too quickly and cling to them too tightly, we can end up following them along counter-productive pathways. We end up drawing lines and creating defences against imaginary enemies, thus leaving ourselves open to actual unexpected adversaries. Be sure you are clear about what you do and don't know.