I have arrived at the belief that philosophy is another word for the design of conceptual tools used for the purposes of enworldment.
Have philosophers taken a human-centered approach to their design work?
Before answering, consider the fact that many philosophers are professors who spend as much time preparing lessons, teaching, and evaluating the success of their teaching. They also write papers and submit them to peer juried journals. If accepted, their papers are published, and the ideas may or may not be put to use by others and cited.
Now, the question a designer is trained to ask at this point is: Who is the user?
An innovation principle presented by the altogether brilliant design thinker Diego Rodriguez: