Quantum theory regarding the Observer Effect indicates that a beam of electrons is affected by the act of being observed, further causing what is being observed to behave differently. This occurs on a quantum level and applies to human and non-human observers alike (machines).
This would imply that consciousness plays a role in our individual realities, which further suggests our collective consciousness as well. Therefore, perceptions or realities are subject to change based on whoever is doing the observing and the intensity in which they observe.
All you need is love. The mantra we could all whisper quietly to ourselves, especially when we encounter people who really need it.
“I know that I know nothing.” Wise words credited to Socrates, but were likely spoken by his student, Plato, whose own student was Aristotle. For three of the greatest minds who ever lived; knowing nothing seems unlikely.
The truth is though; they are right. They knew nothing and neither do we. What we think we know; even if we have proof, is subject to change, therefore, we could not have known it to begin with. What we thought we knew; changes, so it is no longer what we thought it was.