One of the most important skills is the one he describes like this:
>> The more specialized your work, the greater the risk that you will communicate in ways that are incomprehensible to the uninitiated.
In my experience (35 years), this isn't just about knowing the right way to describe things, it's also understanding what things to concentrate on when communicating, and what to ignore. If you are a tech person communicating with a decision maker, they are typically looking to understand options and their implications and risks, not the details of how the options work. They can then decide, based on their (presumably) better knowledge of the wider context, which options to select. If the decision makers are genuinely intelligent and motivated, but their eyes glaze over when you describe something, chances are you have chosen the wrong things to communicate to them.