The belief that products should always be as easy to use as possible is a sacred cow of the tech world. The rise of design thinking, coinciding with beautiful new products like the iPhone, has led some to conclude that creating slick interfaces is a hallmark of great design. But, like all attempts to create absolute rules about how we should interact with technology, the law that design should always decrease the amount of effort users expend doesn’t always hold true. In fact, putting users to work is critical in creating products people love.
Several studies have shown that expending effort on a task seems to commit us to it. For example, when buying a lottery ticket, players are able to either choose their own numbers or play a set of digits generated randomly. Certainly, choosing either option has no effect on the odds of winning. Traditional thinking would predict that the less effortful path would be the one users prefer.