It isn't rocket science,,,
Using long winded explanations for technologies to confuse, dumbfound and ultimately alienate the client from a project, is the sign of a poor designer.

Employing "layman's terms" to fully explain processes allows the client to understand, and therefore be more involved in, their design project. Thus ensuring the end result will fulfil the original outline of the brief & not spiral out of control and away from the desired objective.

D.I.Y.?
WIth the technology now readily available many business owners prefer to produce their own promotional material (or know a friend who can). Therefore it's only reasonable to ask the question: "with all the technology at hand to create company promotional material why use a professional designer?". The answer is simple: using a professional designer guarantees that your image will stand out from that of a competitor who hasn't employed such services.

Life is pretty simple: You do some stuff. Most fails. Some works. You do more of what works. If it works big, others quickly copy it. Then you do something else. The trick is the doing something else.
Leonardo da Vinci