Do they serve a purpose beyond letting us know if we enjoy eating something?
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Your question has the smell of ‘When god made humans, why did he give them taste buds?’
The sense of taste, connected to the sense of smell, is our oldest sense. Long before mammals, long before fish, reptiles, dinosaurs…
How could we NOT have taste buds?
We are part of an ancient lineage, going back to the first cells that ever formed. One unbroken line.
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