3 ms·
Bacteria can be colorful. It can also fluoresce. My blood is red because it has iron in it not because there's an evolutionary link to my eyesight.
by timewizard 1y ago
Bacteria can be colorful. It can also fluoresce.
My blood is red because it has iron in it not because there's an evolutionary link to my eyesight.
- awhitby 1y agoYou're very likely right there's no causation in that direction, but it seems entirely possible that we experience red as a vivid color in part because noticing blood is evolutionarily important.