On being right

When fixing a problem with a machine, there is always a right answer. There is always a bug to be fixed. It doesn't mean it's always easy to find, but there is an end to the search eventually.

People problems don't have consistent answers. What works with one person may not with another. This is one of the main reasons I think engineering types dislike doing sales and marketing work.

You have to learn to embrace the subjectivity of being "right." You have to accept a high failure rate.