@common: zero to do with tipping,
You are right. The association is tipping is gratitude. Gratitude is recognition of positive. We need also to recognize the negative… Also, withholding customary tips (restaurants) is considered a negative recognition. Also, I am all for tipping good teachers. And paying them more – from savings of not tipping and paying bad teachers. Suing is simply restoring falsely claimed payment to the parents – who can now afford tipping good teachers.
Nice? Can I stay in your topic?