If you zoom in close to the area near each "boss," it appears there are holes in the much discussed grooved surface through which each boss protrudes through. Could the grooved layer be resilient material acting as dampening or protective insulation or support. If the back were in fact liquid metal, capable of being dropped from an airplane, would you still need to protect the the circuit boards from the Liquidmetal (as the brain is protected from the skull?)
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