> simplest nonzero amplitudes have two minus helicities while one-minus amplitudes vanish

Sorry but I just have to point out how this field of maths read like Star Trek technobabble too me.

Where do you think Star Trek got its technobabble from?

Have I got a skill for you!

trekify/SKILL.md: https://github.com/SimHacker/moollm/blob/main/skills/trekify...