PRT is only a concept. LRT is a proven success. Here's a video that dispells the myths that PRTistas spin about LRT being "old-fashioned' and ineficient:
Videos about PRT here:
> PRT is only a concept.
> LRT is a proven success.
That really depends on how you define success. We have one in our town, but only a very tiny fraction of the population are in a position to utilize it. It appears empty most of the time. So if you define success as an alternative to the automobile, I would say it fails. The numbers just aren't there.
As for the dumpmarkolson blog, I don't know who Mark Olson is. I've know of J. Edward Anderson, but only vaguely. I have no connection to either one so I'm at a loss to understand you point.