In order to be able to phrase (in)compatibility detection not only in continuous terms, but also as dichotomous tasks, we further produced a list of unambiguously (in)compatible pairs from the ends of the rating scale.
we manually inspected a subset of the list (before any computational simulation was run), and picked a mean 3.7 rating (exclusive) as minimum value for compatible pairs, and 1.6 (inclusive) as maximum score for incompatible ones.