  Two distant black holes can be connected in the interior through a wormhole.
Such a wormhole has been interpreted as an entangled state shared between two
exterior regions. If Alice and Bob send signals into each of the black holes,
they can meet in the interior. In this essay, we interpret this meeting in
terms of the quantum circuit that prepares the entangled state: Alice and Bob
sending signals creates growing perturbations in the circuit, whose overlap
represents their meeting inside the wormhole. We argue that such overlap in the
circuit is quantified by a particular correlation function. Therefore, exterior
observers in possession of the entangled qubits can use this correlation
function to diagnose the collision in the interior without having to jump in
themselves.
