  In this paper we will explore two different proposals for the action for
causal sets: the Benincasa-Dowker action and a modified version of the chain
action. We propose a variational principle for two-dimensional causal sets and
use it for both actions to determine which causal sets at least on average
satisfy a discrete version of the Einstein equation. Specifically, we test this
method on causal sets embedded in 2d Minkowski, de Sitter, and anti-de Sitter
spacetimes and compare these results to the most prominent nonmanifoldlike
causal sets, Kleitman-Rothschild causal sets.
