Particles exhibit a property known as "spin," which is related to angular momentum but does not correspond to classical spinning. This intrinsic property is measured rather than understood in classical terms, leading to confusion about its nature. The discussion highlights that while quantum mechanics allows for predictions based on measurements, the underlying reasons for phenomena like spin and charge remain elusive. The conversation emphasizes the distinction between quantum and classical mechanics, noting that classical observations do not directly translate to quantum behavior. Ultimately, the complexities of quantum mechanics challenge our conventional understanding of reality at the particle level.