A friend told another friend:
"I performed my first Linux install today. I am better than Windows users!"
The friend replied:
"That is nothing! I have performed a dozen Linux installs, each better than the last."
A third friend said:
"I have installed my one hundredth last week. I am a master!"
A man in the corner laughed.
The friends asked:
"Why do you laugh? How many have you installed?"
"The same as your friend here - only one."
The friends guffawed, and the old man said:
"Yes one. In 1993. It still runs my mail server."
The friends had nothing to say.