Eric makes a reasonable point in the comments: Lanier's argument about three-digit IQ giving an inaccurate impression of precision is highly dubious - since throwing away more of the measurements you have made and introducing rounding errors is itself pretty bad.
Once you have lost the data it has gone. Whereas if you have kept the data and you don't want it, you can always throw it away later.
My Bloggingheads.tv interview with Jaron Lanier is up. Reductionism, zombies, and questions that you're not allowed to answer:
This ended up being more of me interviewing Lanier than a dialog, I'm afraid. I was a little too reluctant to interrupt. But you at least get a chance to see the probes I use, and Lanier's replies to them.
If there are any BHTV heads out there who read Overcoming Bias and have something they'd like to talk to me about, do let me or our kindly producers know.