negative entropy (negentropy) is a great name for a set reconciliation protocol. 

positive/increasing entropy: more disordered, more divergent relays. Negative entropy: more ordered, less divergent relays.

Fun fact: schrodinger coined the term negative entropy to try to build a mathematical theory of life, as he noticed life seems to resist the natural process of disorder.

Maybe you can think of nostr as a living system, perpetually struggling to maintain order by staying in sync with other implementations. or maybe i’ve been listening to too much sara imari walker lately.