It is bad to think you are always right.
Dave is having his latest project reviewed by his manager when she points out that he made a couple of mistakes.
Dave wants to respond to the manager pointing out his mistake.
Dave tells the manager that he'll take her comments to heart and go edit the document to make changes.
Dave tells his manager that it's impossible he made a mistake, he never does so, and she must be looking at it wrong.
Dave's manager is delighted that Dave is responsive to her feedback and is willing to correct his errors.
Dave's manager is unhappy that Dave cannot take constructive criticism and isn't taking her feedback seriously.