I'd been waiting for such scientific explanation of luck. I consider myself as an unlucky person. When I have to choose one thing out of two, I always go to the less favorable one. And here's my description of luck: a lucky person is someone who receives opportunities approaching them in an easy way which come one after another, again and again. An unlucky person is someone who receives a couple of opportunities on the same time in which he/she can only naturally take one. And those opportunities won't be back for quite some time although he/she tries hard to get one. The latter is where I am, I think.