We are always at the drawing board (Score 1)

Science, biology in particular, is the study of life and the intricate processes that shape our planet. We need not know exactly how everything fits into the grand scheme of the world, because, after all, what fun would that be? And, on a picky side note, Eukarya, Archaea, and Bacteria are domains, not kingdoms. To say that there are organisms that "don't fit into those classifications" is pure bogus, in my opinion. How about Protista (that is a kingdom)? These have animal and plant like characteristics. The whole point of the Linnaean classification system is to put organisms into the big picture based on the evidence and knowledge we currently possess. And, the point of the five Kingdoms (Animalia, Plantae, Protista, Fungi, and Monera) is to BROADLY classify organisms based on their method of obtaining energy (autotrophy v. heterotrophy, or both) and their fundamental cell characteristics. And of course there are places we haven't searched for new species; maybe we should focus more on discovering life and appreciating the amazing diversity of life and the inherent value of every organism rather than sending monkeys to Mars.