This thread is intended to be a workshop, where we can thrash out the definitions on which all the science-literate freepers can agree. When we are agreed on one final list, we can then link to it in future threads, in the hope of bringing some order to the linguistic chaos that too often prevails in the science threads. In discussions about science and philosophy, we must be careful about our terminology, so that we're all using words in the same way. Dictionaries provide multiple definitions, but not all are appropriate in a specific context. It only generates confusion to...