Does REPLY_FAULT cascade? Meaning, if A is waiting in a SEND to B, and B is waiting in a SEND to C, and C does REPLY_FAULT, does A get killed along with B (and any further tasks that may be waiting on A)? Because if not, a malicious task could just delegate its experiments to a helper task. And if yes, that seems rather brittle overall (without having any further familiarity with Hubris). Furthermore, if SENDs can be circular/reciprocal, a task may also inadvertently kill itself that way — which (for scenarios like B –> A –> B) may incentivize not using REPLY_FAULT.