Hello. I think the Escalation Argument can sometimes be found on the wrong side of Zeno's Paradox. Say there is negative utility to both dust specks and torture, where dust specks have finite negative utility. Both dust specks and torture can be assigned to a 'infliction of discomfort' scale that corresponds to a segment of the real number line. At minimal torture, there is a singularity in the utility function - it goes to negative infinity.

At any point on the number line corresponding to an infliction of discomfort between dust specks and minimal torture, the utility is negative but finite. The Escalation Argument begins in the torture zone, and slowly diminishes the duration of the torture. I believe the argument breaks down when the infliction of discomfort is no longer torture. At that point, non-torture has higher utility than all preceding torture scenarios. If it's always torture, then you never get to dust specks.