alt Hacker NewsA more spikey distribution exactly makes the distribution closer to deterministic. That's not the point though. Even in greedy (deterministic) decoding, it is still a black box though that reacts in ways ways that are unpredictable to the inputs. Switching one word around might lead to different scores for example.
Yeah, this is the forest that the people arguing about math trees are missing. It doesn't matter that the algorithm is deterministic if the algorithm passes the input through a cryptographic hash function to make a yes/no decision. The result may be perfectly reproducible and still non-sensical in its distribution with respect to its input domain.