From Liz O'Neill
I suggest that the observations of Eciton army ants (10 September, p 29) showing complex emergent behaviour built on individual responses to simpler sensory inputs go a long way to explain human consciousness. Recent articles in New Scientist have gone to great lengths to explore human consciousness and whether other animals have it. I sometimes feel some would love to find some wondrous entity pulling levers in our brains: the explanation is in reality far simpler.
Whitland, Carmarthenshire, UK
