Why can't a computer be more like a brain?

Jeff Hawkins, who founded Palm Computing, writes in IEEEE Spectrum, Why can't a computer be more like a brain?  In this article, he brings us up to date with his latest endeavor, Numenta.   He covers progress since his book On Intelligence and gives details on Hierarchical Temporal Memory (HTM) which is a platform for simulating neocortexial activity.  Numenta has created a framework which allows anyone to build HTMs.