What is the definition of a child, and how do we arrive at that definition? Why is it moral to be biased against animals that have a desire for life, freedom and happiness? Why do we insist that all men have a natural right to these things, a self-evident right, but animals do not? Do we imagine that if we found a method for honest communication, animals would not insist that they too deserve these rights?
What happens when machines become so complex that they too demand the same rights?
This is a continuation of this discussion, which went to some length at the Cafe Hayek blog.