Excellent reference, lavacaw.
The author is a well-known expert on pesticides at the University of Pennsylvania. I can't tell if he gets big grant money from pesticide manufacturers, but he seems to be well thought of by the EPA, the University, and pesticide manufacturers. He's not a biologist or environmental scientist, so his focus is narrow, but it appears to be objective.
For those of you who have not read it, here's a few items you may want to consider:
Sevin (carbaryl) is toxic to humans, but no one has ever died from exposure to it, and people who work at factories that produce the chemical don't have kids with three heads.
However, it has only been manufactured since the late 1950s, so we may not know its cumulative effects.
Sevin has serious effects on dogs, honeybees, other members of the bee family, and aquatic creatures.
Sevin degrades into non-toxic compounds in the environment.
Like everything in life, there are pros and cons. Sometimes I wish things were more black and white!