alt Hacker NewsIsn't that interesting? Here is another human who is unaware of traditional tipping culture.
In traditional tipping culture, the tip is calculated on the subtotal for food and drink, minus your bar bill. Therefore, alcohol, taxes, fees, whatever? Those are not part of your tip calculation at all. For tipping a bartender, or if all you did was drink, I'd usually drop a fraction on each drink served, whatever they were.
The POS tipping prompts are all wrong, and they're encouraging more than just mandatory tip-shaming: they are forcing a shift in the basic calculations which was never intended by ordinary tipping customs. A $700 bottle of wine in a restaurant warrants an identical tip to a $7 bottle.
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Tipping a percentage of the bill never made sense. Tip by the number of plates/bowls/glasses/etc served. The server doesn’t do more work for $50 plate vs a $10 plate.
The person paying $700 for a bottle of wine at a restaurant (a bottle that would probably be less than half that price at retail) has no problem throwing an extra $100 on the bill for the server.