Considering how likely we all are to be blown to pieces by it within the next five years, the atomic bomb has not roused so much discussion as might have been expected. The newspapers have published numerous diagrams, not very helpful to the average man, of protons and neutrons doing their stuff, and there has been much reiteration of the useless statement that the bomb 'ought to be put under international control.'
But curiously little has been said, at any rate in print, about the question that is of most urgent interest to all of us, namely: 'How difficult are these things to manufacture?'

Such information as we--that is, the big public--possess on this subject has come to us in a rather indirect way, apropos of President
Truman's decision not to hand over certain secrets to the USSR. Some months ago, when the bomb was still only a rumour, there was a widespread belief that splitting the atom was merely a problem for the physicists, and that when they had solved it a new and devastating weapon would be within reach of almost everybody. (At any moment, so the rumour went, some lonely lunatic in a laboratory might blow civilisation to smithereens, as easily as touching off a firework.)

Had that been true, the whole trend of history would have been abruptly altered. The distinction between great states and small states would have been wiped out, and the power of the State over the individual would have been greatly weakened. However, it appears from President Truman's remarks, and various comments that have been made on them, that the bomb is fantastically expensive and that its manufacture demands an enormous industrial effort, such as only three or four countries in the world are capable of making. This point is of cardinal importance, because it may mean that the discovery of the atomic bomb, so far from