It is a profound and necessary truth that the deep things in science are not found because they are useful; they are found because it was possible to… - Robert Oppenheimer

It was evening when we came to the river
With a low moon over the desert
that we had lost in the mountains, forgotten, what with the cold and the sweating
and the ranges barring the sky.
And when we found it again,
In the dry hills down by the river,
half withered, we had
the hot winds against us. There were two palms by the landing;
The yuccas were flowering; there was
a light on the far shore, and tamarisks.
We waited a long time, in silence.
Then we heard the oars creaking
and afterwards, I remember,
the boatman called us.
We did not look back at the mountains.

I think it is the opposite of true. Let us not say about use. But my feeling about development became quite different when the practicabilities became clear. When I saw how to do it, it was clear to me that one had to at least make the thing. Then the only problem was what would one do about them when one had them. The program we had in 1949 was a tortured thing that you could well argue did not make a great deal of technical sense. It was therefore possible to argue also that you did not want it even if you could have it. The program in 1951 was technically so sweet that you could not argue about that. It was purely the military, the political and the humane problem of what you were going to do about it once you had it...

I can make it clearer; I can't make it simpler.