It's humbling when your eureka experience is somebody else's,
   "Oh yeah that." experience smile emoticon It's all a part of the
   learning process. I find going from eureka! to eureka! is
   useful, especially when I find out I wasn't the first. Then I
   can learn from the one who DID IT, and progress further... and
   then I await the next eureka moment* :) I probably get a dozen
   or so mini "eureka's" a day now. I seek them out by looking for
   unexpected analogies between unexpected things, seeing where the
   connect and where they disconnect. I love it myself. It doesn't
   matter what the subject matter is because I'm more of a
   generalist rather than a specialist, but I just love the
   sensation, the realization, and the productivity (for me, it's
   writing and understanding something novel) I get out of it. I
   hurry up and try to explain it to someone else. That's when I
   know I've grasped it well, and then can move on to the next
   fascinating "wow" moment* :)