Ask HN: The Ethics of Quid Pro Quo
The "tit for tat" situation becomes interesting when you try and apply this scenario to other related situations. For example, you're a contractor with a year-long contract to deliver a project by meeting periodic goals. Let's say that your client is late with last period's payment - is it ethical to drag your feet in project participation until you are paid? Same give and take, but here you've given more than you've taken, creating and imbalance. Is it ethical to stall your progress until this balance is restored? Should balance exist throughout the life of the project, or is the end all that matters? In this situation your client may see your non-participation as hostile and detrimental to the project, causing bad blood rather than righting the imbalance. It seems like tit for tat is acceptable when building trust or for one-off scenarios, but frowned upon in longer term or ongoing situations.
So the big question; is quid pro quo always ethical and to what extent should or could it be used?