The MLR is an important condition on the type distribution of agents in mechanism design and economics of information, where Paul Milgrom defined "favorableness" of signals (in terms of stochastic dominance) as a consequence of MLR.
The MLR (Milgrom-Lauritzen) is a crucial concept in mechanism design and economics of information, particularly when analyzing how agent types are distributed. Paul Milgrom's work on "favorableness" of signals (defined by stochastic dominance) is directly linked to the MLR.