Concept of the Week - Willingness vs. Ability

Recently I've had some issues with someone who is very able, but unwilling to accept certain responsibilities. This reminded me of another concept learned long ago call the Willingness vs. Ability matrix. Traditionally we see high achievers, and settle for something less, while struggling to get the to move up or over into the desired upper right hand quadrant. This also made me realize that sometimes it's better to have someone will high willingness and low ability, than someone with high ability and low willingness.