Julian Cope presents Head Heritage

Er... are you a physician? Are you suggesting that we substitute people for animals? Granted, there are people who would volunteer, but I'm skeptical that such a statement bears much ground in reality.

I do think that as computer modeling becomes more and more sophisticated, we'll eventually be able to test things out on 'virtual humans'. As to whether a program that sophisticated would achieve the ability to feel pain and suffering is obviously one for the science fiction writers now, but for the time being there really is no substitute for trying things out on living beings, at least for some trials, as harsh as that may be to our sensibilities.