How’s this for recursive definitions:
- Mathematician: one who performs mathematics.
- One who performs mathematics is a mathematician.
And you can use the same circular logic to define an engineer.
I suggest defining an engineer the same way as one defines a businessman:
- engineer: one who sees engineering opportunities where no one else does.
The trick is to get your client around to the same viewpoint. Now that’s a salesman.

How about engineering consultant (like Jabba).
ConSult stands for Con and Insult…… that’s what I do to my client daily. I love my job.