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The Hidden Cost of Keeping Everyone Busy · Modularity Podcast

• 0:00
  Here's a question that sounds absurd.
• 0:02
  What if the most expensive person in your business is the one who never stops
• 0:06
  working?
• 0:07
  Not the one standing around waiting.
• 0:10
  The one running flat out all day.
• 0:12
  That cuts against everything owners are taught.
• 0:15
  An employee with nothing to do looks like wasted payroll.
• 0:19
  So the owner walks by, sees someone idle, and hands them more work.
• 0:24
  Anything, just to keep them busy.
• 0:26
  And it feels responsible.
• 0:28
  But Eliyahu Goldratt took that instinct apart in his 1984 business novel,
• 0:34
  The Goal.
• 0:35
  His idea is called the Theory of Constraints.
• 0:39
  A business is a chain, not a collection of independent stations,
• 0:44
  and every chain has one weakest link.
• 0:47
  Strengthen any other link and the chain doesn't get stronger.
• 0:51
  One source on the theory even says it can get worse, because you've added weight.
• 0:56
  Put numbers on it.
• 0:57
  Say there are three steps.
• 0:59
  Steps one and three can each handle ten units an hour.
• 1:04
  Step two can only handle five.
• 1:07
  The whole business produces five an hour.
• 1:10
  That's it.
• 1:11
  If step one sprints at ten, the extra five pile up in front of step two every single
• 1:18
  hour.
• 1:18
  That's a mountain of unfinished work, and it's tied up cash.
• 1:22
  There is a well known mathematical rule called Kingman's formula that proves when
• 1:28
  any system runs at 100 percent utilization, wait times explode toward infinity.
• 1:35
  Once you accept that you cannot run everything flat out, the question becomes where
• 1:40
  to leave slack on purpose.
• 1:43
  The answer is everywhere except the bottleneck.
• 1:46
  Goldratt's famous line, as it's quoted from The Goal, is that an hour lost at a
• 1:51
  bottleneck is an hour out of the entire system, and an hour saved at a step that
• 1:56
  isn't the bottleneck is worthless.
• 1:58
  The novel's characters call it a mirage.
• 2:01
  It looks like savings, but it doesn't change time or money.
• 2:05
  Here's a real one.
• 2:06
  Joe Procopio wrote about starting as COO of Goal Zero the week before Black Friday.
• 2:11
  The warehouse had over five hundred thousand dollars in backorders.
• 2:16
  He started working the floor and saw a growing mountain of packed boxes sitting
• 2:20
  right before two computers that printed shipping labels.
• 2:23
  The crew was moving fast.
• 2:25
  The label printing was the limit.
• 2:27
  So they added two more computers, and by his account the throughput of that step
• 2:32
  doubled and the pile was gone within days.
• 2:35
  Nobody had to pack faster.
• 2:37
  They fixed the one link that mattered.
• 2:40
  Now apply it to places that look nothing like a warehouse.
• 2:43
  Take a dental practice, hypothetically.
• 2:46
  Say a dental operatory can complete 12 patient visits a day.
• 2:50
  The front desk, trying to be productive, books 22.
• 2:54
  That doesn't produce more dentistry.
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  It produces a crowded waiting room, frustrated patients, and a worn out
• 3:00
  practitioner.
• 3:01
  Same with a roofing or HVAC contractor.
• 3:03
  Suppose the install crews can finish four jobs a week, and the sales reps,
• 3:07
  who are measured on closing, sign eight.
• 3:10
  Now customers wait weeks, some cancel, and cash gets squeezed.
• 3:15
  The sales team looks like heroes on their own scoreboard while the business gets
• 3:19
  worse.
• 3:20
  A custom fabrication shop is the same story.
• 3:22
  Run the cutting equipment at maximum speed while welding and assembly can only
• 3:26
  handle half that volume, and the shop floor fills with cut material.
• 3:31
  It's cash sitting on the floor in the way.
• 3:33
  The Theory of Constraints Institute describes this exact chain reaction:
• 3:39
  overproduction, carrying costs, a cash crunch, late vendor payments,
• 3:44
  supply problems, and eventually a damaged reputation.
• 3:49
  So what do you do instead?
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  The framework has five focusing steps.
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  First, identify the constraint.
• 3:55
  Walk the process and look for where work piles up, where someone is constantly
• 3:59
  expediting, where delivery is chronically late.
• 4:02
  Those piles tend to form right in front of the bottleneck.
• 4:05
  Second, exploit it, meaning get the most out of what you already have before
• 4:09
  spending a dime.
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  Keep it from sitting idle during operating hours.
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  Check quality before work reaches it, so the bottleneck never wastes time on
• 4:16
  something defective.
• 4:17
  And pull the admin distractions off it.
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  Third, subordinate everything else.
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  Every other stage works to the pace of the bottleneck.
• 4:26
  The method is called Drum, Buffer, Rope.
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  The bottleneck is the drum setting the beat.
• 4:32
  Upstream only feeds it what it can consume.
• 4:35
  Downstream clears its output right away so it never gets blocked.
• 4:39
  And this is where slack earns its keep.
• 4:41
  By definition, every stage that isn't the bottleneck has spare capacity.
• 4:46
  One source calls that excess capacity a virtue.
• 4:50
  It lets the stages absorb a bad day, a breakdown, or a rush,
• 4:54
  and recover fast, without starving the bottleneck or jamming it.
• 4:58
  The same source describes sprint capacity, which is deliberate overcapacity at those
• 5:02
  stages.
• 5:03
  Fourth, elevate.
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  Only after you've squeezed the first three should you spend capital,
• 5:09
  like new equipment, better software, or a specialist hire.
• 5:13
  And fifth, repeat.
• 5:15
  Fix the constraint and it moves, often from production over to sales,
• 5:20
  quoting, or distribution.
• 5:21
  The warning is about inertia, where an old habit quietly becomes the new constraint.
• 5:27
  Here's how to start this week.
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  First, walk the process, physical or digital.
• 5:34
  Look at where unfinished tasks, open tickets, or parts sit waiting.
• 5:40
  The longest line points at your bottleneck.
• 5:43
  Second, protect that role.
• 5:45
  If it's your lead estimator, your best technician, or your master fabricator,
• 5:50
  take the data entry, setup, and paperwork off their plate and give it to people who
• 5:54
  aren't the constraint.
• 5:55
  Their hour is the company's hour.
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  Third, give yourself permission for slack.
• 6:02
  When someone at a non bottleneck has a quiet stretch, don't read it as lost profit.
• 6:07
  Read it as a shock absorber doing its job.
• 6:11
  Filling that gap with more work is how the pile in front of the bottleneck gets
• 6:15
  started.
• 6:16
  The one thing to remember: a business that looks busy everywhere is often a business
• 6:21
  that's jammed somewhere.
• 6:22
  Smooth flow beats frantic activity every time.
• 6:26
  And if you want help building smarter systems, workflows, and a more resilient
• 6:30
  strategy through technology, marketing, websites, or automation,
• 6:35
  you can learn more at modularity.us.