Well, I'm certainly interested to know how you get ought from is... I'm sure we can explain completely biologically all our various behaviours, but I don't exactly see as where the morality is then, biology is an amoral process, it something that happens. Is this a way of saying that natural science will simply end all discussion about any choices, any preferences as illusionary - we are machines reacting to various stimuli? (Well, that's going several steps ahead, but I would think that finding ought from is, from biological processes, would end all discussion about moral choices. Though of course Ginger, you are both having and eating your cake, as you seem to find "good" and "bad" reactions rising from biological processes which distinction I don't exactly get.)