 The EQI of an experiment or observation is the Expected Quality of its Information for distinguishing \(h_i\) from \(h_j\) when \(h_i\) is true. It is a measure of the expected evidential strength of the possible outcomes of an experiment or observation at distinguishing between the hypotheses when \(h_i\) (together with \(b\cdot c)\) is true. Whereas QI measures the ability of each particular outcome or sequence of outcomes to empirically distinguish hypotheses, EQI measures the tendency of experiments or observations to produce distinguishing outcomes. It can be shown that EQI tracks empirical distinctness in a very precise way. We return to this in a moment.