B.5.2.0:15 - Species boundary reminders

Use anomaly species for an explanatory question arising from a failure, contradiction or surprising departure from the current model. Use opportunity species for an explanatory question arising from an indicated advantage. Use probe species for rival explanations of an observation or predicted contrast associated with a stated probe.

For the four specialization-sensitive species, use the explanatory questions and conditions in §4.1.1. Questions asking which option to acquire, which probe to perform or which substrate to try follow the direct choice routes in §4.3.

Cue-derived prompt entries should stay prompt-headed species rather than projection-headed aliases. The load-bearing question is the prompt kind itself, not one package-local naming trick.