0 the outer edge of a black hole, beyond which nothing, including light, can escape: --
Anything that falls through the event horizon effectively disappears from the universe.
Vanishing point at the event horizon.
For example, it is conceivable, as demonstrated with the case of anti-correlated particles, that an object may be quantum-entangled with another that is inside a black hole's event horizon.
Part of the quantum system crosses the event horizon of the black hole.
Even though these tree grammars are still context-free, they clearly have a larger event horizon, establishing a restricted form of look-ahead.
Our descendants can reach the pseudo event horizon but no further.
Does it depend upon the existence of some sort of event horizon?
We now need to discuss what happens when quantum systems, particularly quantum entangled systems, cross the event horizon of a black hole.
Now, imagine one of the particles were to cross the event horizon of the black hole.