S Wright
S Wright asked Lois McMaster Bujold:

Just finished Physicians of Vilnoc again. Pen often rids his local area of as many biting insects as possible. I wonder about the law of unintended consequences. Do you suppose there would be follow-on effects on the rest of the ecosystem with the removal of the flies, etc?

Lois McMaster Bujold
Nothing gets rid of flies, especially in a world of abundant animal manure. Trust me (and Mark Twain) on this point. And our world has been going after mosquitoes for decades with every tool imaginable, with very little impact. I really don't think a handful of sorcerers are going to make a dent in these very resilient species.

Actually, sorcery ought to be more eco-friendly than our insecticides, since it can be directed to the single biting disease-bearing pest, and leave everything else untouched.

Ta, L.

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