The reply link I used to add this comment, had timed out, which seems wrong. Have continuations just moved the the complexity -- making some aspects more elega

The reply link I used to add this comment, had timed out, which seems wrong. Have continuations just moved the the complexity -- making some aspects more elegant, while resulting in undesired side effects like expiring reply links? I find that often happens when I'm designing abstractions - complexity moves somewhere else, and I later get unexpectedly bitten.