Shipulski On Design

Before a design can be accused of having too much material and labor costs, it must be able to meet its functional specifications.  Before that is accomplished, it’s likely there’s not enough material and labor in the design and more must be added to meet the functional specifications.  In that way, it likely doesn’t cost enough.  If the cost is right but the design doesn’t work, you don’t have a viable offering.

Before the low-cost manufacturing process can be chosen, the design must be able to do what customers need it to do.  If the design does not yet meet its functional specification, it will change and evolve until it can.  And once that is accomplished, low-cost manufacturing processes can be selected that fit with the design.  Sure, the design might be able to be subtly adapted to fit the manufacturing process, but only as much as it preserves the design’s ability to meet its functional requirements. If you have a low-cost manufacturing process but the design doesn’t meet the specifications, you don’t have anything to sell.

Before a product can function robustly over a wide range of operating conditions, the prototype design must be able to meet the functional requirements at nominal operating conditions.  If you’re trying to improve robustness before it has worked the first time, your work is out of sequence.

Before you can predict when the project will be completed, the design must be able to meet its functional requirements.  Before that, there’s no way to predict when the product will launch. If you advertise the project completion date before the design is able to meet the functional requirements, you’re guessing on the date.

When your existing customers buy an upgrade package, it’s because the upgrade functions better.  If the upgrade didn’t work better, customers wouldn’t buy it.

When your existing customers replace the old product they bought from you with the new one you just launched, it’s because the new one works better.  If the new one didn’t work better, customers wouldn’t buy it.

Function first, no exceptions.

Image credit — Mrs Airwolfhound

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