The evolution of the cocktail
A note in "Random Samples" in the July 9 Science relates how in graduate school, evolutionary biologist James Harriman
wondered whether [quirks of personal taste in drinks] evolve into popular cocktails much as mutations give rise to new species, through a sort of taste-based natural selection.
So Harriman, now a visiting scientist at Cornell University, fired up a computer program for generating phylogenetic trees. Instead of genes, he plugged in the ingredients of 100 cocktails, taking vodka as the tree's common ancestor. The program divided cocktails into several distinct families–drinks based on champagne or Irish cream , for example, or punch bowl drinks … A poster of the tree, which doubles as a mixology guide, is available online [for $20] from ThinkGeek.
Such programs do phylogenetic reconstruction based on the Darwinian assumption of descent with modification from a common ancestor. The trick is in the mathematics, of course, but otherwise this is the program of comparative reconstruction suggested to Darwin by the achievements of 19th-century historical linguistics (and ultimately traceable back to the reasoning used by philologists in studying manuscript descent), though in these other applications there is usually no stipulating the common ancestor (vodka in the cocktail case).
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