From John Pavlus:
How to make a Singularity
Step 1: “I wonder if brains are just like computers?”
Step 2: Add peta-thingies/giga-whatzits; say “Moore’s Law!” a lot at conferences
Step 3: ??????
Step 4: SINGULARITY!!!11!one
There are other, perhaps somewhat more serious, rebuttals at Rennie’s Last Nerve and A Fistful of Science.
Now run along, little obsessive Kurzweilians, there are many other blogs out there that regard your hero with derision, demanding your earnestly clueless rebuttals.