A piece of paper is folded and cut, then unfolded, and you have a symetrical pattern of cut holes. Laying this paper over the stone slab, you see visual events in the slab confirming the pattern cut in the paper.
You cut a different pattern; the visuals in the slab seem to corroborate the new pattern of the viewholes.
It occurs to you that the paper pattern acts as a screen, selecting from the infinite field only patterns which correspond to the viewhole arrangement, bits of other patterns which may exist in the stone are seen, if at all, as noise, since their complete symmetricity is screened out.

You understand: this is the Philosopher's Stone.

It occurs to you that all our philosophies are like the cutout patterns you lay on the stone; That corroboration by symmetricity has been sufficient to establish the particular cutout screen as 'truthful'. It is clear though that one 'truthful' symmetry excludes others, by treating their components as noise.

You realize that this applies not only to philosophical systems, but to your daily life- that we screen and select patterns which we live in, and live by, and the rest is noise. This is fundamental to our continuity of consciousness.

It occurs to you that the more cutouts there are in the screen pattern (greater complexity), the more 'truthful' symmetries will be found. The upper limit being the infinite field which we first started out with, and to which we needed to apply patterns to perceive.

The most inclusive way of seeing the stone's infinite field is then with no screen at all.

How indeed do we do that?
It recquires a self induced mutation of consciousness.
How to create that mutation of consciousness

is the central core of the Buddha's teaching.