One of the biggest things that can get in the way of a useful debate, however, is pride.<p>There are a lot of employees that love to argue and, even once it is clear they are wrong, they will still argue for their point and refuse to back down.<p>This emerges even more around design decision when there is no clear right and wrong and two parties are battling for their ideas. Sadly, it is often said that those two argue the longest are the winners, regardless of who is right.<p>I would say passion and the ability to challenge everyone's ideas is extremely important, but you must combine it with humility and the ability to back down when you know you are wrong (or at least more wrong than the other).