“If you can’t measure it, it doesn’t exist.”
Sinek's assessment of how difficult it is to measure impact: copies of a book sold vs # of reads and implementation by readers; Covey's assessment of setting the right goals for people: "I hate rating my one employee; he knocks his self assessment out of the park, but doesn't actually work on improving his management and team building like I wish he would" - "Well, you picked the wrong goals and metrics for that individual."
