ABSTRACT
The editors decided to begin this handbook with a “history” chapter, not because we all like to read history, but because researchers and practitioners can benefit from a chance to step back from the bits and bites of the moment to reflect on the many different ways in which contributions have been and will continue to be made. Successful innovation is not so much the result of lucky guesses as it is understanding the need and the context of what is possible . . . so thoroughly that a solution seems obvious.
