Info

Segal’s law is an adage that states:

“A man with a watch knows what time it is. A man with two watches is never sure.”

The mood of the saying is ironic. While at a surface level it appears to be advocating the simplicity and self-consistency obtained by relying on information from only a single source, the underlying message is to gently question and make fun of such apparent certainty – a man with one watch cannot really be sure he knows the right time, he merely has no way to identify error or uncertainty.

Wikipedia