I'd say a reference is a social construct that implies Person A is willing to vouch for Person B. Their goal isn't to give a fully honest and unadulterated opin

I'd say a reference is a social construct that implies Person A is willing to vouch for Person B. Their goal isn't to give a fully honest and unadulterated opinion on all strengths + weaknesses of an individual, but rather to show that Person B is capable of good work. You're basically finding their upper bound, not necessarily the range of skill sets. Accepting to be a reference when being requested by an applicant assumes you'll be honest but also courteous and positive. In some situations, a potential employer might require to speak with a specific individual who you might not have asked to be a reference. In that situation, the social contract above doesn't apply.