eh, personally, my action would be to take a step back and think about it. If I was in that situation and I needed a salesperson to move my product I'd make t

eh, personally, my action would be to take a step back and think about it. If I was in that situation and I needed a salesperson to move my product I'd make the keep/fire decision purely on his sales numbers. The question is this: Do you need a sales guy to sell your product? If you need a salesguy to move product, really you should be evaluating your salesguy on his performance as a salesguy. If he's moving enough product to justify his salary, keep him on, and figure out a way for you and him to acknowledge that you live in different universes. I've been in many situations where it was obvious sales didn't respect me 'cause I was a nerd, and I didn't respect them because they were sales. But, I did my job and they did theirs, me recognising that I didn't understand the difference between sales and fraud, and they understanding that they didn't understand the difference between engineering and magic. Of course, if you can move product without sales, by all means, get rid of him. But, my experience has been that sales people, when they are being honest, are not pleasant people, so firing a salesperson for being unpleasant doesn't make a lot of sense.