Empty vessels may make the most noise, but half empty (or half full, take your pick) vessels give more trouble as not only are they still noisy, they slosh and throw some weight as well. So would it be too much to ask those people who do not know anything or know just half of something to shut their traps and not advise people with their half cooked knowledge to get on some ego trip? Nothing ticks me off more than people who know only half of something but think that they know everything already and claim that they know nothing when things begin to go beserk after getting people to follow their advice. That's exactly how the mother of all foul fuck ups begin.