A powerful tool in the early stages of developing scenarios is to pretend the interface is magic. If your persona has goals and the product has magical powers to meet them, how simple could the interaction be? This kind of thinking is useful to help designers look outside the box.

There's only one thing you can use against pure logic, and that's common sense.

Define what the product will do before you design how the product will do it.

You can get spiritual things out of books and stories and they have nothing to do with religion.

It's harder than you might think to squander millions of dollars, but a flawed software development process is a tool well suited to the job.

Because computers have memories, we imagine that they must be something like our human memories, but that is simply not true. Computer memories work in a manner alien to human memories. My memory lets me recognize the faces of my friends, whereas my own computer never even recognizes me. My computer's memory stores a million phone numbers with perfect accuracy, but I have to stop and think to recall my own.

One of the most heinous, insidious lies is the notion that you have to be an asshole to be a successful business person.