In the 1990s the Australian philosopher David Chalmers famously framed the challenge of distinguishing between the “easy” problems and the “hard” problem of consciousness. Easy problems focus on explaining behavior, such as the ability to discriminate, categorize and react to surprises. Still incredibly challenging, they’re “easy” in the sense that they fit into standard scientific explanation: we postulate a mechanism to explain how the system—the brain—does what it does.
The hard problem comes after we’ve explained all of these functions of the brain, where we are still left with a puzzle: Why is the carrying out of these functions accompanied by experience? Why doesn’t all this mechanistic functioning go on “in the dark”? In my own work, I have argued that the hard problem is rooted in the way that the “father of modern science,” Galileo, designed physical science to exclude consciousness.
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