According to the Harvard Business Review article "The Real Reason People Won't Change," to identify the "big assumption," guide an employee through this exercise: According to the Harvard Business Review article "The Real Reason People Won't Change," to identify the "big assumption," guide an employee through this exercise: Show the employee a series of designs and ask them what they see in each one. Call them employee in to simulation an interview because when interviewing, people's senses are heightened. Ask the employee leading questions to get them on board with your mindset. Create a sentence stem that inverts the competing commitment, then "fill in the blank