But don't you know?

[robvalue]

"Rainbows" were not in the original text, I believe. If you look at earlier versions, it just says "bow".

They ripped off a previous mythology with this story, in fact several, which may explain this confusion.

There seems to be some dispute over exactly what the "bow" meant, be it a warrior's bow, a necklace or a rainbow.

This video outlines the ripoff, but it doesn't mention about the "bow" bit. I'll see if I can find something more about that.

http://youtu.be/_um69RqBpSw

[edited due to faulty memory, apologies!]

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Here's something about the necklace from Gilgamesh:

http://nathanbauman.com/odysseus/?p=800