Well, the following is an excerpt, probably the best I ever read on the subject. I present for your consideration:

From "How to Think Straight About Psychology," a book by Keith E. Stanovich, Professor of Human Development and Applied Psychology at the University of Toronto, I offer you this set of observations on the sorts of materials available to the public, and how that can tend to detract from the reputation of the science of psychology...

Let me illustrate for you, as I frequently do for my lecture audiences, how I see that lack of supporting structure. Suppose we adopt, as a time-line, the image of a road coming from over the horizon behind us, and pointing straight ahead. This is our progress in science, bordered on each side by structures representing the significant events and discoveries that have been made in science. Looking over our shoulders, we can see, just a bit back on the road, a building that represents Digital Technology; workers are scrambling over the very substantial structure, adding to it and refining its parameters, while traffic in and out is unimpeded. Just a bit farther back, the Quantum Physics building looms, rather dark and mysterious, but prominent and stable. Much further back, we can see the Newton block, well-lit and landscaped. Well out of our sight but well-tended and firmly founded, is the Galileo edifice. All of that leads up to the roadway on which we stand, which, as with other edifices back there like the General Relativity bunker, is constantly being patched, repaired, and maintained by an ever-busy crew.
On each side of the firm, level, road, at the spot we find ourselves occupying right now on our journey, construction is under way on a beautiful but strangely-shaped shop humming away with occupants poring over weird diagrams. That's the Human Genome square. Adjacent is the busy Hubble quarter, processing endless images to discover secrets of great portent. Just ahead, the Nanotechnology Center is taking form on its foundation, slowly but confidently. And other fuzzy, poorly-defined but substantial excavations amid stacks of construction materials are to be seen in tantalizing profusion. The structures behind are firm and well-maintained; they support what we presently experience and are subject to change and the admission of more and better data.
Contrast this with the equivalent symbolic road that serves Parapsychology. On this rather winding and narrow road, pitted with potholes and poorly paved, we see next to us brave structures like Meta-Analysis and Gut Feelings, hastily assembled from scraps and with no foundations, rather sagging and in imminent danger of collapse. Behind the traveler on this road there are no structures still standing; only the tumbled ruins and smoking, burned-out frames of discredited and abandoned theories and paradigms can be seen. Just visible, far back, is the Fox Sisters mansion, deserted and moldering away. That's the Geller structure just a bit back there, built out of bent spoons; a light is on in one window, but it flickers. And ahead of us on this muddy road we discern only darkness, cold, and dense fog. The road dips away steeply and it has a bumpy, slippery, surface. No foundations are being prepared, only a few brave souls are seated drafting building plans at the roadside, and they mumble and fret as their main occupation. We note that baskets of rose-colored glasses are offered for the use of the travelers...