This semi-related post on minimum tips http://www.chowhound.com/topics/392272 got me thinking.
The standard, default rule is 20% (or maybe 15%) of your total bill is how much one should tip.
But what if you are dining solo, order only one item that is very expensive. Say, for example, a rib eye that is $50. And that's your entire meal. No apps, no drinks, nothing. All the server does for your entire dining experience is bring you your steak. Is that still worthy of a $10 tip?
Conversely, what if 3 people went to the same restaurant, each only ordered appetizers, e.g. fries, and iced teas (that came with free refills). Each of the diners requested multiple refills of the iced teas, and several refills of the ketchup jar and their total bill came out to only $15. Is it right (or fair) that they only tip $3?
Shouldn't this threesome tip more than the standard 15%-20%, esp. when compared to the solo steak-eating diner?