We might not understand the logic and significance of geometrical arrangements as being contained in the circle with the spirals, but we still adopt the idea of containment into our thinking and preserve it as a widespread, legendary mythology that we recognize has a hidden meaning. This idea of "containment," that seems so foreign to us in our thinking, may actually come down to us in mythology as King Arthur and the Holy Grail. In this legend, the Knights of the Round Table, (the disk containing the geometries?) quest for the Grail cup, the container of "the water of life." The Grail King, the knight who finds the Holy Grail, can consume the contents of the cup and gain eternal life. Looking at the disk, we are perhaps looking at the origin of the Grail Cup mythology and the original idea behind the ancient, spiritual concept of containment. Does consuming the contents of this "cup" grant us immortality? I think it does.
The idea of containment may have developed over time into a concept of the Grail cup (Grail meaning Crater) but perhaps originated as the crater that contains the cosmos that appears as a vortex-whorl, spinning the elements of itself round and round the crater until centrifugal force separates the elements into a spiral, like a spiral galaxy, and creates a vortex and a funnel through which passes the overflow from itself to itself as a function of containment.
To get the idea of this ancient theory of creation of the universe, try to think of the beginning of the universe as motion forming in a void and becoming an infinite spiraling vortex that forces, through centrifugal force, the thickening of motion into substance, and then the friction caused by the substance ignites, causing explosions, seeming chaos and further diversification. The spin fans the fire and creates internal spiral galaxies, stars and debris and then forces them into groups of similar physical density that create physical planes of matter while, at the same time, creating planes of invisible force facilitating this separation and distribution. Thus, out of this chaos arose the perfect patterns and ideal forms - the planes of geometries - of our world/whorl.
This is an obscure version of the creation of the universe and one we would not think the Minoans could conceive of, but that is only because we are arrogant in our view of ancient worlds and we presume they didn't know anything about science. But a thoughtful people could come up with this one just through observation of the circumnavigation of the stars. Or perhaps the Phaistos Disk and what it seems to relate to the observer is just one person's enlightened version of reality. Though complex and well-conceived, this is just another version of Emanationism, the popular, ancient theory of creation that underlies all the historical religions and that developed from the older religious philosophy of Dualism. Emanationism is an attempt to unify the duality of Dualism into a container-contained concept - a oneness statement - but still postulates the existence of a creator, perceived to be the motion of the vortex, and it identifies the universe as being the Mixing Bowl of the Creator - the Crater - who spins it with his whirl.
"...he who surrounds the spheres and spins them with his whirl, set turning his formations and let them turn from a beginning boundless unto an endless end." (Poimandres in G.R.S. Mead, Thrice-Greatest Hermes, Vol.. 2, p. 5)
The Phaistos Disk perhaps shows the primordial idea of the crater - which may have become "creator" - as dependent on the process of overflow, the idea of the cosmos as a winding river or an ocean - Oceanus - with the upper levels spiralling into those below, creating as it goes. With the Phaistos Disk as evidence, the Minoans appear to have originated the cosmogonal idea of Oceanus. (right) The disk seems to demonstrate a unique cosmogonal theory of the flow going both ways and not just "from above" to "down below" but a return path, as well. This is a complex version of early Emanationism involving the crator of the whorl that might have become, over a long period of time, the creator of the world.
Perhaps the Minoans conceived of this complicated cosmogony by simply drawing an inference from their observation of the circumnavigation of the stars in a vortex-whorl movement. Perhaps our word "world" comes from their observation of the "whorl." It is easy to think of ourselves as living in the "whorl," and comforting as well, since it somehow makes sense and seems like home. Perhaps the Minoans, apparently great geometers, took it one step further and conceived of our "whorl" as being contained inside two pyramids, one inverted sitting under the other, and inside of both is the world disk, its two sides connected for an eternal whorl involving the world "above" in the top pyramid, and the world "below" in the bottom, inverted pyramid. Like the Phaistos Disk, the whorl below is the inverse reflection of the world above, and our life's journey involves moving eternally back and forth through the spirals of this maze.