We really enjoyed this essay from Aeon Magazine contributor Cameron Allen McKean that looks below the fold of the memes and tropes to examine the freshly rediscovered phenomena of carcinisation and convergent evolution generally that been observed by biologists for centuries and dates back much further in mythos with the resonant niche that we humans occupy as fellow increasingly armoured “intertidal scavengers” and crablike representatives of this extended phenotype. These liminal beings not only inform a common motif in contemporary science fiction but also inhabit our eldest stories, like the zodiacal sign—the Sun’s most northerly position in the sky during the solstice, the Tropic of Cancer (though now shifted to the constellation of Taurus due to the procession of the equinoxes) named for Καρκίνος, the pesky crab that played distraction whilst Hercules fought the Hydra of Lerna. Slain after pinching the hero’s foot, Hera—not a fan—placed the crab amongst the stars or the Norse tradition of the Kraken, usually depicted as a crustacean sea monster. Reaching even further into the past, fishing practises yield one of the most readily manifest examples of natural selection with the seemingly unnatural and superstitious cast-off and release that resulted in a population of crabs with angry samurai faces. Much more to explore at the links above.
synchronoptica
one year ago: assorted links worth revisiting (with synchronopticæ), a forgotten pioneer of cinematography, swimming with Benjamin Franklin plus France at the polls
twelve years ago: advertising via bone-conduction, the Pope visits refugees on Lampedusa plus a proposal to drain the Mediterranean
thirteen years ago: Julian Assange granted sanctuary plus food additives
fourteen years ago: houseplants thriving