Is the glass half full or half empty?

 Is the glass half full or half empty?

To the optimist, the glass is half full. 

To the pessimist, the glass is half empty.  

To many accountants, the glass is twice as big as it needs to be. 

To the realist, it doesn't matter if the glass is half empty or half full. There is clearly room for more. 

Anyway, instead of describing the glass they are more interested in drinking whatever it contains. 

And the older accountants who stop the debate and simply add whisky to the glass. They also point out you should never ask if the glass is half full or half empty. The question misses the point. The glass is refillable. And, anyway, why bother with the glass if you can find the bottle/jug?