Now I get to look forward to co-workers being further tricked into influencing me. As an engineer, I've come to realize that the only mission of a salesman is to manipulate your otherwise objective decision making in their favor. ("Objective" to the extent possible for a human). Where possible, I no longer accept sales calls or meetings with sales. Sometimes, it's hard to let go of the feeling I'm being rude. Companies who don't have a hard-boiled, experienced purchasing person doing most of the talking during major buying efforts are fools. Unfortunately, this is the exception rather than the rule.