because I haven't looked, is a number provided by Harvard and audited by no one.

Not accusing anyone specifically of dishonesty, but law schools and others have been sued over providing 'optimistic' numbers that were borderline fraudulent. If someone goes to HBS and is forced to take a job as a mcDonalds manager, do you count that as 100%? I would not. many schools do. What about those who stop looking for work, do you drop them from your count? many schools do. What about those that stay for a PHD. 100% employed? Tough call.

bunch of scenarios and HBS and everyone else is exceptionally motivated to provide the rosiest picture possible.