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A comment on Dot Watch – A braille and tactile smartwatch. Parent comment

Re:Dot Watch – A braille and tactile smartwatch by falsedan on Wednesday March 01, 2017 @10:48AM (#13764620) 

  > searchlights or even lasers
Think about the return on investment on these: how much energy to grow and power vs. the improved food gathering. Also: would this make the creatures easier to find by predators?

Galagos developed large eyes rather than sonar, true. I refer you to my other comment:

  > Perhaps eyes convey a general advantage, regardless of how you find food?
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Re:Dot Watch – A braille and tactile smartwatch by logicallee on Wednesday March 01, 2017 @11:05AM (#13764794)
I think we can all agree that my point is made, and it's easy to imagine sentient extraterrestrials without photoreceptors.
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