In classical physics, the concept of state preparation and measurement is fundamentally different from that of quantum mechanics. In classical physics, a system is typically described by well-defined classical variables, and its state can be fully measured and known at any given time. This means that in classical physics, state preparation and measurement are straightforward processes.

In the context of the non-cloning theorem, it states that in quantum mechanics, it is impossible to create an identical copy of an arbitrary unknown quantum state. This limitation arises due to the nature of quantum superposition and the probabilistic nature of quantum measurements.

In classical physics, however, there is no concept of superposition, and measurements provide deterministic outcomes. Therefore, it is indeed possible to fully measure and prepare a classical state, and it can be cloned or copied without any inherent limitations.

To summarize, in classical physics, the ability to fully measure and prepare a classical state allows for cloning or copying, as there are no restrictions similar to the non-cloning theorem in quantum mechanics. Quantum mechanics introduces new complexities and limitations, which result in the impossibility of cloning an arbitrary unknown quantum state, making it a unique and fundamental feature of the quantum world.
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