Libertarianism secretly relies on most individuals being prosocial enough to tip at a restaurant they won't ever visit again.
Libertarianism might rely on individuals generally being that prosocial, but that specific thing isn't necessary. Most jobs don't get tips. There's no reason waiters need them.
As I understand it, in the USA waiting staff get paid below minimum wage and are expected to live off tips.
Today's post, Science Doesn't Trust Your Rationality was originally published on 14 May 2008. A summary (taken from the LW wiki):
Discuss the post here (rather than in the comments to the original post).
This post is part of the Rerunning the Sequences series, where we'll be going through Eliezer Yudkowsky's old posts in order so that people who are interested can (re-)read and discuss them. The previous post was The Dilemma: Science or Bayes?, and you can use the sequence_reruns tag or rss feed to follow the rest of the series.
Sequence reruns are a community-driven effort. You can participate by re-reading the sequence post, discussing it here, posting the next day's sequence reruns post, or summarizing forthcoming articles on the wiki. Go here for more details, or to have meta discussions about the Rerunning the Sequences series.