Comment by cubefox

Exactly. Stated and revealed preferences are sometimes very different. Interestingly, preferences can also change slowly over time. For example, the Dell Streak in 2010 had a 5 inch screen size, which was considered ridiculously large at the time (people called it a "phablet"), and it didn't catch on initially. But years later, average phones did actually reach and even exceed that size. Nowadays the Dell seems relatively small.