While of course I agree with Liz's opinions regarding Harlow's research, it is a serious historical error to judge the behaviour of a scientist of 50-odd years ago by the standards of today. Today, homosexuals may marry and even contrive to have children: 50-odd years ago their behaviour was punishable by custodial sentence. In both cases, what was done then was acceptable in 'the court of public opinion' of the time, and is unacceptable in that court today. One would have to be brave (and foolish) to say that everything which is acceptable today in animal science will be acceptable in 50-odd years time, or that everything which is now unacceptable will always be so. Robin Robin N Campbell Psychology, Stirling r.n.campbell@stir.ac.uk -- The Sunday Times Scottish University of the Year 2009/2010 The University of Stirling is a charity registered in Scotland, number SC 011159.