The different sensing organs we have are all the same except one major difference, they interpret a different ranges of the same spectrum. As I've mentioned before, sometimes they overlap (proving this is a fact, not a theory). Just like people will be able to see with their tounge in the future using the technology of the BrainPort or similar, people will also be able to hear with their tounge, or another organ with profound sensing capabilities, like the skin, or even eyes.
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