Reliability display is the deliberate accumulation of small, dependable follow-through in order to build a reservoir of trust that can later be drawn on for a single large exploit. In honest relationships this is simply how reputation works — you keep small promises and people reasonably extend you larger ones. The manipulation lies in treating that reservoir as something to be spent: the reliability is instrumental, staged as bait for one disproportionate request rather than as the by-product of genuine dependability.
The tactic exploits the integrity and benevolence dimensions of trust described in the Mayer, Davis and Schoorman (1995) model — we infer future trustworthiness from a track record of kept commitments, and from the consistency principle Cialdini catalogues, we feel that someone reliable “wouldn’t” suddenly betray us. Both inferences are usually sound, which is exactly why the pattern is hard to catch early: nothing in the deposit phase looks wrong.
The tell is not the reliability itself but its relationship to the ask. Honest trust survives verification and grows in proportion to what has been tested; exploitative trust asks you to skip verification precisely because of the record, and it does so when the stakes take a sudden, non-reversible leap. Scale what you extend to what you have actually confirmed, and reserve your largest commitments for tests you could walk back.