What Makes an Expert?

This is just a short post with something that's been bothering me all day.

This morning I saw an interview with a woman author who has an article in a current magazine on successful blind dating for women. Her qualification, proudly stated, is that she's been blind dating for more than twenty years.

Doesn't that make her a failure? It seems to me that a success would be a few blind dates (at most) and a long-term relationship.

Just asking.