Not necessarily. If you live in an area with spiders, you probably also have mosquitoes and all kinds of other insect disease vectors. Having a nice spider would go a long ways to keeping those vectors down.
Interesting point - avoiding spiders is better for me individually, but reducing mosquitoes is better globally. So I guess it depends if our aversions are optimized for the individual or the species.
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Not necessarily. If you live in an area with spiders, you probably also have mosquitoes and all kinds of other insect disease vectors. Having a nice spider would go a long ways to keeping those vectors down.
Interesting point - avoiding spiders is better for me individually, but reducing mosquitoes is better globally. So I guess it depends if our aversions are optimized for the individual or the species.