I don't see why this is being down voted as someone who has read the Ringworld novels I couldn't help but think of Teela Brown and her luck.

Because chiph is offering a fictional explanation for a real world phenomenon. There have been lots of scientific studies involving randomness in fields as diverse as economics, game theory, gambling behavior, and parapsychology; if 'luckiness' was a measurable characteristic of people then you'd expect it to reliably show up in such contexts. Invoking it as an explanation where a simpler alternative exists (the idea that some people are more skilled at analyzing current affairs) is illogical.

I cant downvote, but i expected the link to point to someone real, not a fictional character.

And on the opposite side of the spectrum : http://en.wikipedia.org/wiki/Roy_Sullivan