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06_The Flow Killer: How Local Optimization Destroys Overall Performance

The danger of focusing on the wrong KPIs.

BUSINESS & LEAN MANAGEMENT

Waleed Radwan

1/27/20263 min read

The day started with an unexpected confession.

The team gathered for their follow-up meeting to report on their "homework" — the hard conversations they'd been avoiding. Rocky and Ms. Pristine shared positive updates. Then it was Mr. NoNo's turn.

He cleared his throat. "I need to admit something. I've been resisting changes. I know. But it's not because I'm stubborn."

The room went quiet.

"Last quarter, I prioritized urgent maintenance requests to clear operations' bottleneck. Plant output increased 18%. My department's efficiency dropped from 94% to 87%. I got pulled into a meeting about 'declining performance.' No one mentioned the 18% plant output increase."

Rocky's eyes widened. "So you were punished... for helping?"

"Exactly," NoNo said. "That's why I resist. Not fear of change. Fear of being penalized for doing what's right."

Sage stood up and walked to the whiteboard.

"What NoNo just described is the most dangerous trap in modern organizations." He wrote: "LOCAL OPTIMIZATION vs. GLOBAL OPTIMIZATION"

"Eli Goldratt called this the core conflict - in his book The Goal. Every department optimizes its own metrics while the whole system suffers."

Rocky jumped in. "So NoNo's department looks 'worse' because the company is doing better?"

"Precisely," Sage said. "Peter Senge in The Fifth Discipline calls this sub-optimizing the whole."

He drew a simple flow diagram. "When Department A runs at 100% efficiency but Department B can only process 60%, what happens? Inventory piles up. Department A looks amazing on paper, but the company drowns in work-in-process."

"Don Reinertsen wrote that these invisible costs — inventory, delays, coordination — exceed visible costs by a factor of 10. But we only measure the visible ones."

Ms. Pristine asked, "Soooo …..what's the alternative?"

Sage smiled. "Theory of Constraints has one simple rule: Optimize the constraint. Everything else subordinates to it. EVERYTHING !"

He turned to NoNo. "Your job isn't to be 87% or 94% efficient. It's to ensure the plant's constraint is always fed and never starved."

"But my performance review—" NoNo started.

"You change the metric," Sage interrupted. "Instead of departmental efficiency, measure throughput — the rate the entire system generates money. Instead of individual or department objectives, we need team or company objectives. The Phoenix Project shows how organizations suffer when teams optimize independently rather than measuring flow from order to delivery."

He pointed to the window. "See that machine processing parts for our biggest client? That's our constraint. Everything should feed that machine. If maintenance prioritizes other equipment, we lose money — even if their efficiency looks good."

Rocky grinned at Remix. "Soooo…seems like your 'synergistic optimization' slide decks were optimizing presentations, not performance!"

Even Remix smiled.

Sage turned serious. "NoNo made the right decision but got punished. This repeats everywhere. Donella Meadows in Thinking in Systems warns:

improve components without understanding interconnections, and you make the whole worse."

"So what do we do?" Ms. Pristine asked.

"As we said before …. we go back to Goldratt's Five Focusing Steps," Sage explained. "Identify the constraint. Exploit it — keep it running. Subordinate everything else to it. Elevate if needed. Repeat.”

He continued, “Key insight is? Most improvements may happen NOT at the constraint, but everywhere else to support it."

NoNo spoke softly. "So... I wasn't wrong?"

Sage placed a hand on his shoulder. "You did what the system taught you: protect yourself. The system was wrong. Not you."

NoNo's shoulders relaxed.

Sage stepped back. "Here's your new homework. Each department head: identify one metric you're currently optimizing that might be hurting the whole. Just one. Think about it."

As people started to leave, Rocky lingered behind with a question brewing.

"Sage... if we change the metrics, won't people resist? Won't they fight it?"

Sage's eyes twinkled with that familiar mischievous glint.

"Oh, they'll resist alright. But not for the reason you think."

Rocky frowned. "What do you mean?"

Sage just smiled and headed toward the door.

"You'll see next week. You’re gonna like this one !”

#MrSage #Leadership #BusinessExcellence #LeanThinking #TOC #ContinuousImprovement #Coaching #RespectforPeople #WorkplaceWisdom #SystemsThinking #TheoryOfConstraints

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