Thought: Oedipus lived the Sphinx's riddle backwards

[Recursion]

The riddle the Sphinx asked him was "what walks on four legs in the morning, two at noon, and three in the evening." Oedipus answered "man", because as a baby he crawls on his four arms and legs, as an adult he walks on two legs, and as an old man he walks on his two legs and a cane.

But Oedipus himself was the opposite. As a baby, his feet were nailed together, so he had his two arms and the one nailed-together set of feet to crawl around on. As a man, he limped around on two legs. As an old man, he didn't walk around with a cane (Sophokles is very specific about this), he was supported by his daughter (and half-sister) Ismene. So his progress was not 4-2-3 but 3-2-4.

Discuss.