In the following documentary, Brian Cox visits some interesting animals in the US (giant catfish, glowing scorpions, mantis shrimp and octopi, among others) to explore and understand how they, and we, are able to create mental representations of our environment through taste (chemicals), sound (air waves) and vision (light), and how it is that the gradual process of evolution through natural selection has slowly sculpted the amazing machinery of perception, by taking fish jaws, for instance, and slowly turned them into the ear bones that make hearing possible for you and me...
To catch that catfish, he didn't have to enlist the help of a scientist... he could have just told a redneck to go noodling :)
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