One is quantum. We hear both Bergson and Ho telling us we can learn more and make hugely greater progress if we compare organ to organ instead of model to organ or model to model. Such is still the opinion of many naturalists. It is tending, however, to give way to the opposite idea that a new species comes into being all at once by the simultaneous appearance of several new characters, all somewhat different from the previous ones. The theory he deduces from his experiments is of the highest interest.
Species pass through alternate periods of stability and transformation.
Indeed, perhaps both are partly true. We wish merely to point out that if the variations invoked are accidental, they do not, whether small or great, account for a similarity of structure such as we have cited. Cf., by the same author, Species and Varieties , Chicago, 1905. Bergson's assumptions here are not incompatible with what we know about quantum reality. See our description of our imagined 'self' examining itself as a quanton .