I've been wading through this book for nearly a year and it has been a journey. There is so much in here to unpack, think through, and digest that I hope you won't take this small review as an accurate picture of the whole work itself.
Off the top of my head my biggest takeaways include the following:
1) Design is a distinctly different form of making sense of the world from science and art.
2) One of the most important abilities of a designer is the development of character.
3) Design is a form of action, expression, and service that is always unique in some degree to its context.
4) The mindset of design is characterized by being adequate, not comprehensive, and being intentional over reactionary.
Some key definitions and thoughts that I found especially thought-provoking:
> Goal of design: "Designers from any design field, formally defined or not, can relate to other designers because they all are striving toward the same goal; they are hoping to add to, or change, the real world. They do this through their service-related creativity and innovation, in both particular and universal ways." (p. 22)
> Design Wisdom, "Inquiry for action. Actions creating the right thing, for the right people, at the right time, in the right place, in the right way, for the right reasons is design wisdom." (p.217)
> Systems matter. "Reductionist approaches in thinking and intervention separate and isolate function from teleological ends while ignoring altogether intentional aims. But what we argue here is that the understanding and improvement or optimization of functional members and elements of a system in isolation from the intention, purpose, or ends of a system is not possible. The relationships between functional activity and teleological considerations are as important as the connections between system elements." (p.76)
> Knowing "what is" is not enough. "Description and explanation - science - do not prescribe action, nor do prediction and control - technology - justify action. Around the world, billions of dollars are spent on studies and projects based on science and technology. This is done in the belief that rubbing the two together will generate the spark of prescriptive action. Unfortunately, this never happens, because the spark must flare from a different source." (p. 106)
>What do you design? "There is a trend in design schools and design professions focused on creating things that "change behavior." The confluence of those who like to tell people what to do and those who like to be told what to do seems to be growing. Unfortunately, too little is being done to enable people to understand and accept the challenge of being human - in other words, "lame gods" - possessing the skills to make almost anything happen, but lacking the competency to discern which among all the possibilities actually ought to be done. As designers, we have the freedom to chose whether we create stuff, things, or junk. Our responsibility of course is to better understand how best to bring the right things into existence, for the right reasons, for the right people, at the right time and place." (p. 248).
I intend to come back and add more. It is just too darn good.