To the best of our current knowledge, there is no evidence to suggest that any organism, including humans, has the ability to directly perceive or understand the world in a quantum mechanical way. Our brains have evolved to process information based on classical physics, which adequately describes macroscopic objects and everyday experiences.
Quantum mechanics is a mathematical framework that describes the behavior of particles at the microscopic level, such as electrons and photons. It introduces concepts like superposition (where particles can exist in multiple states simultaneously) and entanglement (where particles become correlated in such a way that the state of one particle is connected to the state of another, regardless of the distance between them).
While quantum mechanics is well-established and successfully describes the behavior of particles at the microscopic scale, it does not directly manifest in our macroscopic everyday experiences. Classical physics, which encompasses mechanics, thermodynamics, and electromagnetism, provides an accurate description of the macroscopic world we observe.
That said, it is worth noting that some researchers have proposed the intriguing idea of quantum biology, which explores the potential role of quantum effects in biological processes. These proposals suggest that quantum phenomena could play a role in certain biological systems, such as photosynthesis or avian navigation. However, the extent to which quantum effects are relevant in these cases is still an active area of research and not yet fully understood.
Overall, while organisms may not directly perceive the world in a quantum mechanical way, quantum mechanics remains a fundamental framework for understanding the behavior of the smallest building blocks of matter.