"Dense" is generous; you could go as far as "unrigorously terse". Sometimes they just don't make sense. But he got results. A good collection of his presentati

"Dense" is generous; you could go as far as "unrigorously terse". Sometimes they just don't make sense. But he got results. A good collection of his presentations is at http://www.d-n-i.net/dni/john-r-boyd/ http://www.d-n-i.net/dni/john-r-boyd/ and there's low-quality video of his "Conceptual Spiral" on YouTube.