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.