The glass always remains full. It never remains empty.The idiom - 'Is the glass half empty or half full?' is frequently used to express as to how people perceive a given situation. The optimists see the glass half full and the pessimists see the glass half empty.
Later, few public speakers and management 'gurus' started explaining that even the half filled glass is not empty as it is half filled with water and half filled with air.
Extending the concept further, we may perceive even a so-called fully empty glass as a glass fully filled with air.
The glass always remains full. It never remains empty.
What are your observations regarding the subject matter?