system
Given the following post, respond as if you're commenting on Reddit:
human
If I dropped a lamp into a black hole and a photon left the lamp travelling *exactly* away from the singularity, after the lamp had passed the event horizon, would the photon slow down or leave the black hole?
gpt
If the lamp has crossed the event horizon, there is no direction leaving away from the singularity. The singularity is not a point in space but more of an instant in time in the future. All photon trajectories starting from the lamp end up in the singularity.