A single column from Bob Colwell can make a subscription to Computer worthwhile. Two heads are better than one as long as both are actively trying to accomplish the same goal. But those two heads also can achieve less together than either could alone. It depends on many things. Cognitive humility is one of the general traits I like best about engineers: We know we don't have all the answers, and yet we recognize that our designs must move forward even when our imperfect knowledge can have serious or even life-threatening consequences. Brainstorming, Influence, and Icebergs | 
