4 ms·

This makes a lot of sense, thx!

furyofantares 7mo ago
Sounds plausible at least, but I think the question isn't necessarily making a valid assumption. Why do men have to have nipples? Why is our retina installed backwards? Why do sinuses drain upwards? It's just a path evolution took, it doesn't jump to some optimal design.
- technothrasher 7mo ago
  Correct, though interestingly apropos to the discussion is that sex is one of the ways evolution is able to get around local maximums.
- Fraterkes 7mo ago
  Asking “why” questions about our body / evolution often (not always) gives informative answers. As in the example you gave: https://www.scientificamerican.com/article/the-purpose-of-our-eyes-strange-wiring-is-unveiled/ https://www.scientificamerican.com/article/the-purpose-of-ou...
  - yorwba 7mo ago
    Interesting finding, though it doesn't explain animals with properly-wired retinas: https://en.wikipedia.org/wiki/Cephalopod_eye https://en.wikipedia.org/wiki/Cephalopod_eye (Scientific American is throwing up a paywall even though they're only republishing https://theconversation.com/look-your-eyes-are-wired-backwards-heres-why-38319 https://theconversation.com/look-your-eyes-are-wired-backwar... At least they link to the original.)
- rolph 7mo ago
  male nipples are developmental vestiges, the male condition is derived from response to embryonic testosterone, and is a developmental variation from default. early stage embryos of both sexes are not easily distinguishable by genitalia, they look morphologically similar. later developmental events culminate in morphological rearrangement to male form. lack of response to testosterone during development results n a curious state of affairs, where a person is genetically male, having x, and y chromosomes, develops according to a female plan. external appearances are female, with loss of secondary sex development in puberty. Androgen insensitivity syndrome: https://en.wikipedia.org/wiki/Androgen_insensitivity_syndrome https://en.wikipedia.org/wiki/Androgen_insensitivity_syndrom...

Sounds plausible at least, but I think the question isn't necessarily making a valid assumption. Why do men have to have nipples? Why is our retina installed backwards? Why do sinuses drain upwards? It's just a path evolution took, it doesn't jump to some optimal design.

technothrasher 7mo ago
Correct, though interestingly apropos to the discussion is that sex is one of the ways evolution is able to get around local maximums.
Fraterkes 7mo ago
Asking “why” questions about our body / evolution often (not always) gives informative answers. As in the example you gave: https://www.scientificamerican.com/article/the-purpose-of-our-eyes-strange-wiring-is-unveiled/ https://www.scientificamerican.com/article/the-purpose-of-ou...
- yorwba 7mo ago
  Interesting finding, though it doesn't explain animals with properly-wired retinas: https://en.wikipedia.org/wiki/Cephalopod_eye https://en.wikipedia.org/wiki/Cephalopod_eye (Scientific American is throwing up a paywall even though they're only republishing https://theconversation.com/look-your-eyes-are-wired-backwards-heres-why-38319 https://theconversation.com/look-your-eyes-are-wired-backwar... At least they link to the original.)
rolph 7mo ago
male nipples are developmental vestiges, the male condition is derived from response to embryonic testosterone, and is a developmental variation from default. early stage embryos of both sexes are not easily distinguishable by genitalia, they look morphologically similar. later developmental events culminate in morphological rearrangement to male form. lack of response to testosterone during development results n a curious state of affairs, where a person is genetically male, having x, and y chromosomes, develops according to a female plan. external appearances are female, with loss of secondary sex development in puberty. Androgen insensitivity syndrome: https://en.wikipedia.org/wiki/Androgen_insensitivity_syndrome https://en.wikipedia.org/wiki/Androgen_insensitivity_syndrom...