"Now consider again. Neither of you is dangerous. You are both interesting and valuable to society. The only thing that is at all bothersome is the fact that you, per se, are not happy. You need an integration of personality. He needs the same. I might hope for a coalescing of you two, but at the moment--and possibly for all time--it is impossible. All I can tell you is the same thing that I told him. Frustration to the extreme will exorcise the other personality. He tried it by running you into debt; by purchasing a laboratory full of things that you, as an engineer, can see no practical use for. You frustrated him--or tried to--by making something commercial out of his last experiment. That, unfortunately, was not frustration for him. "You must--if you wish to freeze him out--develop something that will frustrate the physicist and still be possible to rationalize in your own personality." "Um." "An insolvable problem would do it--if you can shun the problem yourself." "That might be difficult." "Especially when the two of you are inclined to become the other when faced with a problem that does not fit in your psyche." "The problem--I wonder." "What do you do when you are faced with a tough or impossible problem in physics?" "I don't get 'em, usually." "Well, supposing some company required a casting of tungsten metal, for instance." "I'd ask that they show me exactly why the tungsten couldn't be formed in another manner." "Supposing they demanded that it be cast?" "There isn't anything on God's green earth that could be used to handle molten tungsten. Tungsten metal can be shaped, forged, machined, or cold-rolled. But you can't cast it. Ergo, if I were offered that problem I'd merely ask why they needed it. If they require a tungsten shape, I'd recommend shaping or machining, for instance, depending upon how the shape is. If they merely want a tungsten casting for the sake of wanting a tungsten casting, I'd laugh at them and tell 'em it was impossible as I close the door behind them." "And your physicist?" "He wouldn't even consider it. To him, no real problem exists. He'd have no truck with a production department in the first place, and in the second, shaping metals isn't particularly of interest to a physicist, excepting when the shape itself is important. And then he doesn't give a howling hoot how it gets in that shape as long as it is shaped properly." "Well, as I see it, you must evolve something that will frustrate the physicist while holding his interest. He must be compelled to consider this insolvable problem by sheer interest alone. It also must be something that you can see no interest in save as a problem for him, otherwise you may find yourself biting your mutual fingernails over your own devilish plan." "Um--that's a large order." "That's it," said Hamilton. "And in the meantime, I'd suggest that you tinker around with some of the stuff you bought. It will lessen the shock of your problem of the bankroll."