Not every stable cluster is homeostatic: Stability, network order, and control in projectible kinds

Homeostatic property cluster theory gave natural-kinds realism a powerful anti-essentialist form, on which a kind can be real because its properties cluster through mechanisms rather than because it has an essence. In the HPC-descended debate, the homeostatic component can be made to carry too much weight when asked to cover several achievements that aren't the same: reliable co-occurrence, network order, maintenance, and feedback-sensitive control. This paper treats projectibility as the target of kind claims and offers a diagnostic ladder: identify the projection target, then ask whether a stable profile supports it, whether network order makes the profile non-accidental, what if anything maintains the profile, and whether that maintenance is corrective control. On the disciplined use proposed here, homeostasis belongs at the last step, where perturbation-sensitive organization preserves a higher-scale relation through lower-scale variation. The Watt governor calibrates control, glycemic regulation tests the strict biological version of the control diagnostic, interjection tokens supply a contrast linguistic case, and monitored agreement production supplies a candidate positive one. The result is a disciplined way of using the framework's insight without turning homeostatic into a loose synonym for stable or projectible.