Half empty or Half full ?

Have you heard of this ?? I came across while attending one of my classes , we were disscussing abt a certain topics and everyone came out with different answers, then a Bro came up and drew on the whiteboard....picture of a glass half filled with water.

When he asked us to describe the picture he drew...some said the glass filled with liquid was "half full" yet others responded that it is "half empty."

The conclusion, is not abt the glass of water being half filled or half empty...it is abt the differences in perception, result in different people seeing different things and attaching different meanings to the same stimuli. ...

Two people can witness the same event and had two totally different perceptions of what happened based on their perception.

So, What's your take over the "glass picture"...half empty or half full ?