A short essay (in English, because it is also intended to some friends who do
not read French) trying to solve Singer's psychological puzzle by pointing at
another related puzzle.
To be precise is to make it as easy as possible for others to prove one wrong. That is what requires courage.
Etre précis consiste à rendre aussi facile que possible aux autres de démontrer qu'on a tort. C'est cela qui requiert du courage.
(T. Williamson, 'Must do better', 2004.)