
This news will thrill devotees of a creationist god of divine malevolence; but for those who prefer their deity to resemble the all-loving god of the New Testament, it will be a cause for concern. Even more worrying for the latter, the current campaign by creationist organisations such as the Discovery Institute—trying to promote the pseudoscience of Intelligent Design as a scientific alternative to evolutionary biology—unwittingly strengthens the case for a malevolent designer. After all, Michael J. Behe’s notion of irreducible complexity and William A. Dembski’s concept of complex specified genetic information apply just as well to parasites and stealth predators as they do to supposed “beneficial” features such as human intelligence or the biological systems that keep us alive.
The latest example comes from scientists at Tunghai University, Taiwan, who have shown that a sheet-web spider has evolved a particularly nasty trick for luring fireflies to their deaths. The method is brutally simple: once the spider captures a firefly, it keeps it alive, so its flashing courtship signal continues to glow. Instead of attracting a mate, the unfortunate insect draws more fireflies into the spider’s web—and to certain death.
To an evolutionary biologist, this is a fascinating demonstration of how a mindless natural process can hone behaviour in whatever direction produces more offspring, regardless of whether humans judge the outcome “good” or “evil.”



















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