CP3S said:

I agree with imperialscum, saying, "The Force runs strong in my family" doesn't have to mean it is hereditary. It is like saying, "Faith runs strong in my family" indicating that the family holds to religious values and are strong believers.

Anakin having been a Jedi, and now Luke becoming a Jedi, are enough to warrant the comment about the Force being strong in Luke's family without inferring that it must mean that the ability to use the Force, or how well you can use it, is somehow genetic.

Pre PT. I always imagined the force as more of a mental thing. The skywalker family just are strong in this way. Kinda like a seer, or mystic. Not a physical thing, but they have some kind of evolved mental energy. It is passed down but not in such an explicit way as "You've got more of these things floating in your blood than that guy".

A question:

I always remember growing up with the image of Anakin and Obi-Wan dueling in a Volcano (Or at a push a lava planet) firmly fixed in my mind. Me, my brothers and my friends. So where did I get this notion from? An article? A EU book? An interview?