and i opened it up actually with a discussion about stephen jay gould. he wrote a book called the mis- measure of man. the turn of the last century the scientist who were doing craniotomy trade study the brain and the schools, they basically posited a theory and try to support it with signs that basically reinforce their own prejudices, saying that there were certain groups at smaller schools, smaller brains, to justify their view of the superiority of third races. and i think that you could have science that is well done and rigorous. and you have science and reinforce the existing paradigm, prejudice. and i think we saw the animals are such a long time. we were deniers of what was commonsense in front of us. there was this view of the behaviorism, a theory of animals, were animals are kind of mindlessly pursuing food and many opportunities, and they're almost devoid of emotional characteristics and qualities. this was the reigning doctrine in the school of behaviorism for quite a long time. and i think in these last 20 years from especially the last 25