The acclaimed bestseller about visual problem solving-now bigger and better "There is no more powerful way to prove that we know something well than to draw a simple picture of it. And there is no more powerful way to see hidden solutions than to pick up a pen...
The acclaimed bestseller about visual problem solving-now bigger and better There is no more powerful way to prove that we know something well than to draw a simple picture of it. And there is no more powerful way to see hidden solutions than to pick up a pen...