Good design is honest—Rams' Sixth Principle

Dieter Rams's "Ten Principles of Good Design," Principle 6: "Good design is honest (Gutes Design ist ehrlich)." His explanation is brief yet incisive.
"It does not make a product more innovative, powerful or valuable than it really is. It does not attempt to manipulate the consumer with promises that cannot be kept."
This is not a critique of marketing, but a demand for the very form of design itself. Rams believed that everything—shape, material, scale, and finish—implicitly communicated a promise to the user.

Do Not Falsify Materials

In the tradition of German design, there is a concept called "Materialgerechtigkeit" (material appropriateness). This is an ethic of treating materials as they are, without making them pretend to be something else. Applying metallic paint to plastic to make it look like stainless steel. Applying wood grain prints to inexpensive fiberboard to make it look like solid wood—these are the "disguises" Rams rejected.
The SK4 Phono Super, released in 1956, was a reversal of this practice. For this integrated radio and record player, Rams chose a transparent acrylic lid. At the time, it was common practice for home appliances to conceal their internal mechanisms within wooden cabinets, but Rams chose to "reveal" the mechanism. Critics worried that consumers would dislike seeing the internal workings of an electrical device, but instead, the SK4 was praised as "chic." This was an example where "not hiding" was honesty, and that honesty became beauty.

Gillette's Acquisition and the 10 Principles as an "Antithesis"

One of the motivations for Rams to document the 10 principles is said to have been Gillette's acquisition of Braun shares in 1967. As commercial pressures increased, Rams felt the need to create an antithesis: "This is honest design." When forced to prominently display the Gillette logo on products, Rams reportedly always insisted on placing it in an "inconspicuous location, on the back, or in a visually integrated spot."
Rams, who declared in the late 1970s that "the era of thoughtless design for thoughtless consumption is over"—the 10 principles were also a document written as resistance to the times.

Materials That Don't Make "Unkept Promises"—ZACK's 18/10 Stainless Steel

In the world of bathroom accessories, there are many "stainless steel-like" products made from inexpensive materials with metallic paint. While they may shine like stainless steel, the paint peels off after a few years, revealing the deterioration of the underlying material. This is a typical example of what Rams called "promises that cannot be kept."
The 18/10 stainless steel that ZACK uses—an alloy of 18% chromium and 10% nickel—is finished with a hairline polish, not by painting or plating the surface. The gleaming surface is the very embodiment of "processed genuine stainless steel." Not erasing but showing the traces of manufacturing is the honesty of the material. A design where the form does not betray the promise, "This product is stainless steel"—that is the practice of Principle 6.
Next time, we will explore Principle 7: "Good design is long-lasting."