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Items tagged with: Evolution
👶 Why do men have nipples? Because milk evolved over 100 million years before nipples did. A 300-million-year story in four parts: sweaty-bellied synapsids hydrating eggs, a lysozyme gene accidentally inventing lactose, monotremes dripping milk through belly fur, and a PTHrP mutation that finally pulled ducts into a bud.
Trilobites saw the world through lenses made of actual rock - and solved an optical problem 400 million years before humans did.
Their eyes were built from calcite, the same mineral in limestone and marble. Every other animal that ever lived uses soft protein lenses. Only trilobites evolved image-forming eyes from a hard, brittle crystal.
Here's the wild part: calcite is birefringent, meaning it splits light into two rays (double vision). Trilobites solved this by perfectly orienting each crystal so light traveled along the one axis where birefringence doesn't happen. They also exploited calcite's high refractive index (1.66 vs ~1.38 for our eyes), which works far better underwater where organic lenses struggle.
Some phacopid species went further - they grew a double-lens system with a magnesium-rich inner layer that eliminated spherical aberration. That's the same optical trick Huygens worked out in the 1600s. Evolution cracked it ~400 million years earlier.
Source: Towe (1973), Science - science.org/doi/10.1126/scienc…
The problem with Jeff Bezos' ideology is that it's based on a false premise. The idea that "6,000 years ago someone invented the plow" is based on a faulty belief that ancient humans functioned as individuals. They did not. Ancient humans were collectivist.
Archeological evidence demonstrates that for hundreds of thousands of years, early humans congregated around communal gathering places, like the fire, and engaged in problem solving and passing on of shared learning down through generations.
Additionally, the plow (and tools like it) were developed by humans in Mesopotamia, Europe, Egypt, East Asia, sub-Saharan Africa as well as other places - not in one place by one person. This is known as parallel development.
Believing that the plow was invented by one 'genius' is like believing language was invented by one person. It is a silly myth and represents the projection of current moral standards onto past events.
Collectivism is how we survived and progressed as a species. - Anthony Zenkus
#Evolution
