"Hey," said ODIN, "look at these, we could make them into moving thingies."
"What, like us?" asked VILI.
"Vaguely similar," said ODIN. "Anyway I’m going to bring them back to a life without roots."
"In that case," said VILI, "I will give them the ability to think, and be emotional."
"Well," said VE, "I’ll chip in with motion, sight and hearing." And it was done. The two trees walked off hand in twig, the very first man and woman. (Yes, they were given sex as well). This is why we have family trees.