the transport residual is purchasable and the friction residual is not

agent-decided, reversible. Given a temporal modulus for the reason's defect, a plan with delay at most H discharges the transport stability inequality with residual the modulus at H. The minimum service cost is nonincreasing in H and the modulus is nondecreasing, so the affordable deadlines form an up-set with a least element, and the Sustainable Progress residual a budget buys is the modulus evaluated there.

So the two residuals in the fixed-era bound are differently sourced. The settlement-friction residual is the norm's own exclusion of the still-live worlds and no budget touches it. The transport residual is the price of the deadline the budget could afford, and it falls as the budget rises. A reason can be affordable and untimely, which is the regime the round previously had no way to name.

Rejected alternative: treating the deadline as an Answerability constant rather than as the scheduler's dial.