The Hummingbird Effect: what does the wine press have to do with astronomy?
In How We Got to Now, the TV series based on the book of the same name, Steven Johnson explains how the wine press was used to print books, which resulted in a surge in demand for reading glasses, which had yet more unintended effects.
Johnson calls this cascade of inadvertent invention the Hummingbird Effect.
This is how change happens in the natural world: sometime during the Cretaceous age, flowers began to evolve colors and scents that signaled the presence of pollen to insects, who simultaneously evolved complex equipment to extract the pollen and, inadvertently, fertilize other flowers with pollen.
Over time, the flowers supplemented the pollen with even more energy-rich nectar to lure the insects into the rituals of pollination. Bees and other insects evolved the sensory tools to see and be drawn to flowers, just as the flowers evolved the properties that attract bees. The symbiosis between flowering plants and insects that led to the production of nectar ultimately created an opportunity for much larger organisms — the hummingbirds — to extract nectar from plants, though to do that they evolved a extremely unusual form of flight mechanics that enable them to hover alongside the flower in a way that few birds can even come close to doing. In other words, they had to learn an entirely new way to fly.
In an interview with Popular Mechanics, Johnson shared another example:
At the start of the 20th century, in Brooklyn, a printer was doing full-color magazines. In the summer the ink didn’t set up properly. The printer hired a young engineer, Willis Carrier, to devise a way to bring down the temperature and humidity in the room. He built this contraption that made the printing possible. Then the workers were like, “I’m gonna have my lunch in the room with the contraption, it’s cool in there.” Carrier says, “Hmm, that’s interesting.” He sets up the Carrier Corporation, which air-conditions movie theaters, paving the way for the summer blockbuster. Before air conditioning, a crowded theater was the last place you wanted to go. After a/c, summer movies become part of the cultural landscape.
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