Hampering our ability to design general AI is the embarrassing fact that we don’t understand what we mean by “intelligence.” This lack of knowledge makes any predictions of when we will achieve strong AI fraught with uncertainty. Still, it may not be so far away. For the record, most experts believe that strong machine intelligence will arrive before the century is over, assuming current trends continue. — <a href="http://www.scientificamerican.com/article/will-artificial-intelligence-surpass-our-own/" target="_blank">Will Artificial Intelligence Surpass Our Own? - Scientific American</a> (via <a href="http://wildcat2030.tumblr.com/" class="tumblr_blog" target="_blank">wildcat2030</a>)