Canadian Government Documents 6

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The next step is to sort out the observations according to some pattern. The particular pattern is not so important as the fact thet it should take account of all contingencies, however improbable they may appear at first sight. In other words, there must be a compartment somewhere in the scheme of things into which each Sighting may be placed, comfortebdly, and with nothing left over, furthermore, it must be possible to arrive at each appropriate compartment by a sequence of logical reasoning...