What does it mean that chain timing?

Each chain has an optimal speed — rushing causes errors and dawdling causes disengagement.

Example: A software developer has a five-step deployment chain: run tests, review diff, write commit message, push to staging, verify staging. At rushed speed (twelve minutes), she skips reading the diff carefully, writes a one-word commit message, and pushes before tests finish — bugs slip through. At dawdling speed (ninety minutes), she checks email between steps, loses her mental model of the changes, and second-guesses whether the commit is even ready. At her calibrated speed (thirty-five minutes), each step flows into the next with enough care to catch issues but enough momentum to maintain her understanding of the full changeset.

Try this: Choose a behavioral chain you already execute regularly — your morning routine, a work startup sequence, or a cooking ritual. Tomorrow, time it at your natural pace and record the total duration. The following day, compress it by twenty percent (set a timer for eighty percent of the original duration) and note which links break down, get skipped, or produce errors. On the third day, expand by twenty percent (set a timer for one hundred twenty percent of the original) and note where your attention wanders, where you insert unplanned behaviors, and where boredom emerges. Your optimal tempo sits between the two failure boundaries. Write down the target duration and practice at that pace for the next five days.