Oh my gosh, thank you Strilanc for putting me out of my misery. You put your finger on precisely my problem! I have not completely grasped the concept of how to work with multiple qubits - how they combine to from a 2^n level system. Your explanation helps a ton. I also found a youtube video...
I'm having a hard time following the analysis of the basic quantum circuit that illustrates Deutsch's Algorithm - essentially I'm not following the algebraic manipulations there making on the two input quantum bits (simple case). One analysis is given at the bottom of the page of the link I...