So I've been asked to talk about prenatal testing, and I thought since it's come up earlier in the discussion, that good ethics is based on good science and a good understanding of the social context in which the science is occurring, that I would take the first half of my eight minutes or so and talk about what I see as some of the sort of scientific bais in something of the social context for prenatal testing as it relates currently, and as it may relate in the future to autism. and then bring up what I see as some of the multiple ethical issues that this raises. 