The 21st Century Supply Chain

2 Responses to “Making “Kinexions” between influencers”

  1. Jim Ashmore

    “Andy said that we have moved from thinking we need a single number forecast (and therefore single number plan) to understanding that we need a single perspective and a range of plans that cover range of possible business conditions under which we will operate over the next period.”

    Having a single forecast is actually does more harm than good. Even if the forecast was 70% accurate in the closest period at the aggregate level, it is still 30% wrong. There is even larger variability within products, making it always necessary to monitor the actual demand and have a range of possibilities to deal with positive or negative deviations. The same goes for supply. In some systems, the variability of supply is far greater than the variability in demand. Planning processes that don’t track supply as vigorously as demand misunderstand more than have the variability in supply chains.

    The Shewhart cycle of Plan-Do-Check-Act is one of the greatest methods to counteract these deviations.

  2. Trevor Miles

    Hi Jim
    Yes, PDCA and Sense&Respond are themes that have been around for some time. We use the term Plan-Monitor-Respond that combines these two into a single concept.

    PDCA tends to approach things from quality control angle meaning that it treats divergence from plan as ‘aberrations’ that need to be ‘corrected’. In other words a lot of PDCA is focused on improving the quality of the process or the plan. What I think is missing in PDCA, is the acceptance that the plan is always wrong to some extent; often significantly wrong. This is something you bring out in your comment.

    Sense&Respond on the other hand tends to focus on detecting when the plan is not being followed, but does so in a narrow quality control manner, assuming that the quality bands were correct in the first place. In other words there is little attempt to understand the impact or consequences of the quality band violation, and therefore the true severity.

    Plan-Monitor-Respond is focused on the customer impact and aims to drive a quick and profitable response to real supply chain conditions, whether caused by demand or supply variability.

    Regards
    Trevor

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