HarvestmoonSubspecies of the halfmoon, Moliform semiluna, with no apparent behavioral or biological distinction. Arbitrarily named for a bright autumn phase of Earth's moon.
1. Green
It is green
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"The current scientific consensus is that altruism - helping someone at cost to your own survival - cannot evolve. Animals help other animals if they're helping themselves. Nothing is free.
"Of course, you'd help an animal, right? If you saw a kidney poacher stuck in an acid bog, you'd drag it out. And it'd soak you in 'do not eat' pheremones and take you home to meet its poachlets.
"But the transcapital bio-ghouls insist that the kidney poacher is going call you a sucker and eat your kidneys. Why? Because you don't have a Green Beard.
"An animal can evolve to help other animals...but only if those animals display binding proof that they'll help back. A Green Beard. Kind of a reverse Mark of Cain.
"Help your fellow Green Beards, and you'll always come out ahead. Ignore everyone without a Green Beard, and you'll never be tricked and stabbed in the kidneys. Die for the Green Beard, if you must - just as long as the other Green Beards are equally willing to die for you and your children.
"For this to work, the Green Beard has to be impossible to fake. They think of that right away. They point to historical practices like skull-shaping and scarification.
"But the Green Beard also has to be impossible to share. It has to be guarded jealously. The alternative, to the minds that rule us, is quite unthinkable..." - Nahema Nakota, "My Project (draft 13.4.new.new.real)"