Parthasarati Dileepan wrote:

> 1. Those who know that they know.
> 2. Those who don't know that they know.
> 3. Those who know that they don't know.
> 4. Those who don't know that they don't know...

It depends on perception.  Taken from elsewhere:

> El Vaquero (the Mexican Cowboy) and his Chihuahua, Chilito, are
> camping in the desert near Las Cruces. He sets up their tent and both
> are soon asleep. Some hours later, El Vaquero wakes his faithful
> friend. "Chilito, look up at the sky and tell me what you see."
>
> Chilito replies, "I see millions of stars, senor."
>
> "What does that tell you?" asks El Vaquero.
>
> Chilito ponders for a minute. "Astronomically speaking, it tells me
> there are millions of galaxies and potentially billions of planets.
>
> Astrologically, it tells me that Saturn is in Leo.
>
> Chronologically, it appears to be approximately quarter past three.
>
> Theologically, it's evident the Lord is all-powerful, and we are
> small and insignificant.
>
> Meteorologically, it seems we will have a  beautiful day tomorrow.
> What does it tell you, senor?"
>
> El Vaquero is silent for a moment, and then says, "Chilito, you
> moron. Someone has stolen our tent."

Jeff