Bear in mind the human race has a very poor record on predicting the impact of its actions, let alone protecting rare species, or even other human beings. It's pretty much "shoot first, count bodies later."

> As early as the mid-1870s, entomologists and amateur naturalists in San Francisco began to lament the loss of native plant habitat and its effect on butterfly abundance and diversity. The fate of the Xerces blue butterfly, an endemic species of the dunes of San Francisco, was the most noticeable but hardly the only species in decline. In 1875 Hans Herman Behr, a local entomologist and early member of the California Academy of Sciences, was predicting its demise. "Glaucopsyche xerces is now extinct," he told a friend. "The locality where it used to be found is converted to building lots, and between German chickens and Irish hogs no insect can exist besides louse and flea."

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