The topic of this book is simple: how to design the best websites and apps for mobile devices and tablets. How is it different from the many other books on this topic? It is based on empirical evidence on how regular users actually use such user interfaces.

A key lesson from the past decades of usability is that you cannot trust your own instincts regarding what will be easy for normal people. The fact that you’re reading this book proves that you are very different from the average mobile user. Repeat after us: “I am not the target audience” (unless you’re designing an app for designers).

Most other books on mobile design describe the authors’ personal preferences: what they think is good. This can certainly be interesting information, ...

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