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Hypothetical situation in which, for simplification, only some physical aspects are considered in order to further understand or reveal contradictions between the laws governing them.
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Can you find the length of a pencil without a ruler or clock?
Edit: Assume you do have access to all sorts of instruments, but they are all shrunk in proportion. My real question is:
If you are shrunken (or expanded) by a constant factor and put in a room shrun …