“We assert that the atom in reality is merely the...phenomena of an electron wave captured, as it were, by the nucleus of the atom...From the point of view of wave mechanics, the [particle picture] would be merely fictitious. I have, however, already mentioned that we have yet really observed such particle paths [see, for example, Fig. 6-6]...We find it confoundedly difficult to interpret the traces we see as nothing more than narrow bundles of equally possible paths.”