# Action 2

Like all nice physical theories, we can in principle derive everything about our theory of superstrings once we know the formula for the action. For bosonic strings, the action is very simple. As time passes, a string traces out a 2-dimensional surface in spacetime called the “string worldsheet”. The action is just the area of this worldsheet.

— John Baez

2010.06.22 Tuesday ACHK

# 係咁咖啦 2

（安：「係咁咖啦症候群」患者，有時不單不當地預設了「現存的東西/制度是『理所當然』的」，而且把他們所身處的規則，套用在不相干的事情上。例如，有些人會講：「足球隊領隊的薪金，不及那些明星足球員高。所以，領隊很難可以駕御到那些明星足球員。」我覺得這個想法完全不相干。

— Me@2010.06.21