If you're new here, you may want to read the Introduction . A new column is theoretically posted every other week. In practice, there've been very few new columns in the past couple of months.
All previous columns are still available, along with reader commentary.
To find a particular item or topic, see the index . As several readers have noted, I'm remarkably far behind on posting these comments, but I hope to get back to doing so regularly eventually. By the way, the most pleasant of the big projects that have eaten up all my time lately is that I'm now a fiction editor for Strange Horizons , an online science fiction and fantasy magazine.