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42 I-CONNECT007 MAGAZINE I APRIL 2026 In the other corner is our reigning champion: design for manufacturing. They're battle-scarred and seasoned, disciplined, and grounded in reality. DFM is the design philosophy focused on ensur- ing a product can be built reliably, repeatedly, and cost-effectively at scale. While DFI seeks what's possible, DFM seeks what's practical. It evaluates whether materials are available, tolerances are achievable, processes are stable, yields are high, and production can run without surprises. DFM has held the title for so long because, ulti- mately, every product must face it at some point in its lifecycle. A design can be brilliant on paper, but if it can't be fabricated, assembled, and tested con- sistently, it never leaves the lab. DFM is the long- time champion because it's the real-world proving ground where ideas must stand up to physics, process capability, and production economics. Why Fighting It Out Matters With our "contenders" in the ring, the bell rings, and the ultimate showdown begins. At first, it appears to be a classic fight. DFI throws the first punches: bold ideas, new technologies, unconven- tional approaches. It moves fast, takes risks, and pushes limits. Then DFM counters with precision: Can it be built and scaled? Will it yield? Can it be repeated thousands of times without failure? Every strike from DFI is met with a grounded response from DFM. The match seems to go back and forth, neither side able to eliminate the other. As the rounds go on, something becomes very clear: Neither fighter can actually win alone. If DFI dominates, you get brilliant designs that can't be produced. If DFM dominates, you get safe prod- E L E M E N TA RY, M R . WATS O N ucts that no one is excited about. Instead of the fight ending with a knockout, it ends with both real- izing they've been training for the same outcome all along. The Result: Everybody Wins What appeared to be a fight between DFI and DFM is more like the crab basket. While it appears the crabs are competing, each pulling the other down and preventing escape, they aren't. They are connected. Every movement from one affects the others. No crab moves independently, whether it is intended to or not. DFI, DFM, and many other DFX principles be- have similarly. Innovation seeks to climb, manu- facturing seeks stability, and the motion of one immediately influences the other. They're not iso- lated forces taking turns; they're part of the same system, reacting in real time. What appears to be opposition is, in fact, interdependence. So, the lesson from both the ring and the crab basket is the same: The goal is to understand how they move together. Because in real engineer- ing, just like in that basket, nothing moves alone. I-CONNECT007 John Watson is a professor at Palomar College, San Marcos, California. To read past columns, click here.