Instead of building on solely personal experience to build a theory of how things should be done, he supplements his direct experience with actively seeking to interview projects to see how they work.

• 他不是完全基于自己的经验建立事情如何操作的理论，而是把自己的直接经验积极地补充到对工程的调查中，研究一下这些工程是怎么工作的。