Intelligence: An Evolutionary Dead End?

The question of whether the evolution of high intelligence is really an effective long-term survival mechanism or a biological dead end is still an open one. We are likely to find out on a time scale that, compared to the one it took for us to evolve, will be extremely short. We are smart enough to create very destructive toys, but not smart enough to know how to play with them safely. We still don’t have toys nasty enough to enable us to self destruct completely, but, with a little imagination, it won’t be long.