David is a fascinating person to work for and with. He knows how to get to the heart of a very complex problem very quickly. His comments are always thoughtful and thought-provoking. He values creative brainstorming. He is open-minded, always ready to question accepted wisdom. He truly listens to people at all levels of a company, which is why he can come up with solutions where others see only obstacles or are frustrated by blind spots. I highly recommend him as a colleague and problem-solver.