Our perceptions will never render the world perfectly. They need constant monitoring and correction. Science handles that need. But no amount of science will ever make our perceptions error-free. Our perceptions DO portray the world though. The fact that we perceive anything at all suggests that something must be real.
If it turns out to be a bunch of quantum fields, fine. I don't think that has any spiritual implications.
We perceive things like "solidness" at the macro-level because, for all intents and purposes, the solidness is there. It is a physical property that manifests at a certain macroscopic level. Our perceptions about many such things are spot-on.
Our perceptions interpret the flickering magic lantern show provided by our senses, in a manner which allows us to navigate the world. The version of the world we are capable of perceiving has to equate well enough to reality, in order for us to function in it.
A distinction should be drawn here between an illusion, behind which there is an underlying reality independent of the consciousness of the observer, and a hallucination, which is entirely a fabrication of that consciousness.
The mental and the physical have to correlate effectively. The body, the senses, have to inform the mind in a manner which is meaningful and practical, even if deceptive. But this symbiosis of mind and matter is necessarily limited and limiting. The senses are the tools of the mind, and the mind is the tool of the spirit. We are incomplete, and imbalanced, when we nurture mind and body, but neglect the spirit. But since the spirit is mercurial, and immaterial, it cannot be weighed, calibrated, or directly observed. Naturally it cannot be observed, because it is the observer; and the pupil cannot behold the iris. So how are we to know the spirit? There are no shortage of suggestions, fortunately, from those who have trod that path before us. Some interpretations, however, may be misleading; and we humans are easily misled.
Solidity, a quality of objects which is inarguably real
from the perspective of the conscious observer, is the ultimate illusion. Whether we conceive of the building blocks of the material world comprising fundamental particles flickering in and out of existence*, as waves in space, or as fluctuations in a quantum field, physics tells us “All that is solid, melts into air.”
* “It is better to consider a particle not as a permanent entity but rather as an instantaneous event. Sometimes these events form chains that give the illusion of being permanent, but only in particular circumstances and only for an extremely brief period of time in each particular case.”
- Irwin Schrodinger
“An electron…is more pattern than substance. It is order. Thus we arrive at a strange place. We break things down into smaller and smaller pieces, but the pieces, when examined, are not there. Just the arrangements of them are. What then, are things?…if things are forms of forms of forms, and if forms are order, and if order is defined by us, they exist, it would appear, only as created by and in relation to us and the universe. They are, as the Buddha might say, emptiness.”
- Anthony Aguirre, Cosmological Koans