WE ARE on the brink of technological breakthroughs that could augment our mental powers beyond recognition. It will soon be possible to boost human brainpower with electronic "plug-ins" or even by genetic enhancement. What will this mean for the future of humanity?

This was the theme of a recent Neuroscience in Context meeting in Berlin, Germany, where anthropologists, technologists, neurologists, archaeologists and philosophers met to consider the implications of this next stage of human brain development. Would it widen the gulf between the world's haves and have-nots - and perhaps even lead to a distinct and dominant species with unmatchable powers of intellect?

Malafouris also believes such augmentation is the next logical stage in human development. "If we accept that tool use was part of the reason we came to develop language, then why should we perceive neuro-engineering as a threat rather than as the new stone industry of the 21st century?"