My dear disabused Terry, you observed:
What you are describing in your self-imposed "Greyness" is the fallout from having once been absolutely certain and having lost that.
That is certainly true, and, as I described earlier, that began with my experiences in the religious arena. I still had the refuge of the scientific arena, and thus I was more than happy to pursue a career in engineering. But, as I mentioned, that college experience was where I happened upon some "disturbing" observations, for example:
It has often been said, and certainly not without justification, that the man of science is a poor philosopher. Why, the, should it not be the right thing for the physicist to let the philosophizer do the philosophizing? Such might indeed be the right thing at a time when the physicist believes he has at his disposal a rigid system of fundamental concepts and fundamental laws which are so well established that waves of doubt cannot reach them; but, it cannot be right at a time when the very foundations of physics itself have become problematic as they are now. At a time like the present, when experience forces us to seek a newer and more solid foundation, the physicist cannot simply surrender to the philosopher the critical contemplation of the theoretical foundations; for he himself knows best, and feels more surely where the shoe pinches. In looking for a new foundation, he must try to make clear in his own mind just how far the concepts which he uses are justified, and are necessities.
The whole of science is nothing more than a refinement of everyday thinking. It is for this reason that the critical thinking of the physicist cannot possibly be restricted to the examination of the concepts of his own field. He cannot proceed without considering critically a much more difficult problem, the problem of analyzing the nature of everyday thinking.
Our psychological experience contains, in colorful succession, sense experiences, memory pictures of them, images, and feelings. In contrast to psychology, physics treats directly only of sense experiences and of the "understanding" of their connections. But even the concept of the "real external world" of everyday thinking rests exclusively on sense perceptions.
Now we must first remark that the differentiation between sense impressions and images is not possible; or, at least it is not possible with absolute certainty.
--Albert Einstein (Physics and Reality, from The Journal of the Franklin Institute, Volume 221, No. 3, March 1936)