Every time I see an article which talks about "Watson" as an individual solution to a problem I find myself wondering what the people paying for it all think that "Watson" is?<p>Realistically its like 10+ racks filled with POWER systems loaded up with terabytes of RAM running SUSE Linux using Apache Hadoop for distributed computing, then some IBM Proprietary software solutions + a few other open bits and pieces (ie Apache UIMA) cobbled together to get something which behaves as though it understands natural language.<p>Honestly if you put most data-centric systems on a platform with dozens, if not hundreds, of POWER CPUs with 8-16 cores a piece and 4 threads/core and then put the entire data store into RAM so you could get at it quickly, I suspect that you could fool most people into thinking there was intelligence behind it, not just raw computing power.