_Reflection, consideration, meditation._—We are entering upon more uncertain ground in attempting to apply the mechanism of subconscious processes to every-day thought. There are certain types of thought, however, which behave as if this mechanism were at work. When, for instance, we take a problem “under advisement,” reflect upon it, give it “thoughtful consideration,” it seems as if, in weighing the facts pro and con, in looking at it from different points of view, i.e., in switching it into different settings, in considering all the facts related to it, we _voluntarily_ recall each fact that comes into consciousness. Yet it is quite possible, and indeed I think more than probable, reasoning from analogy, that the processes which present each fact, switch each point of view, or setting into consciousness, are subconscious and that what we do is chiefly to select from those which are thus brought into consciousness the ideas, settings, etc., which fulfil best the requirements of the question. In profound reflection or attention to thought (a form of absentmindedness) it seems as if it were more a matter of attention to and selection from the “free associations” which involuntarily come into the mind than of determining voluntarily what shall come in. If this be so, it is evident that the subconscious plays a much more extensive part in the mechanism of thought than is ordinarily supposed. We have not, however, sufficient data to allow us to do much more than theorize in the matter. Yet there are certain data which suggest the probability of the correctness of this hypothesis. In this connection I would point out how entirely confirmatory of this view is the testimony of the hypnotic consciousness which was cited in the previous lecture and which I will ask you to recall. You will remember that this testimony was to the effect that when a problem was under consideration associative memories required for its solution kept emerging out of the unconscious into the secondary consciousness.[122]