The Kano method assesses whether a proposed product or feature is attractive or delightful, as opposed to being merely necessary or unexciting. It gives a compelling answer but one that may not be correct. Its implementation uses questionable theory with low-quality survey items. We discuss the theory and method and present an empirical study of Kano reliability. Alternatives -- such as MaxDiff paired with traditional scales -- obtain similar benefits while using higher quality, more reliable methods.
