From Malcolm Miller
The views of Judith Rich Harris on the foundations of personality made me think of something in my own home (25 February, p 48). My partner and I own Macintosh G4 computers. No doubt when they left the assembly line they were identical – give or take perhaps 0.1 per cent. After a few months’ use, they have a different desktop appearance, run different software and have their files organised in vastly different ways. As for the content, it would be difficult to find anything the same unless you knew just where to look.
Is this very different from any two people, whether siblings or twins? Surely this shows clearly a distinction between nature and nurture.
Lyneham, ACT, Australia
