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In page Ansible:

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In the universe of the Ender's Game series, the ansible's functions involved a fictional subatomic particle, the philote.[3] The two quarks inside a pi meson can be separated by an arbitrary distance, while remaining connected by "philotic rays".[3] This concept is similar to quantum teleportation due to entanglement; however, in reality, quark confinement prevents quarks from being separated by any observable distance.[citation needed]