Part 6/11:
By utilizing information as a foundational building block, we can redefine how we understand quantum systems. Zeilinger argues that the simplest informational component reflects the answer to a binary question. Quantum mechanics, then, can be interpreted through a series of yes-no questions, with each quantum system embodying the information content linked to specific measurements and interactions.
For example, consider quantum spin. When measuring the spin of an electron, the answer to whether its spin points up or down can only hold one bit of information. If we choose to ask a different question, such as whether the spin points left or right, that original piece of information becomes undefined until it is measured again.