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The glass is 50% empty or full, but it is entirely made of glass so it is also 100% glass.
(self.showerthoughts)
A "Showerthought" is a simple term used to describe the thoughts that pop into your head while you're doing everyday things like taking a shower, driving, or just daydreaming. A showerthought should offer a unique perspective on an ordinary part of life.
The state of the glass is determined by its beginning state. If it was full and is now missing half, then it's half empty. If it was empty and now it's half full, then it's half full. This can be a metaphor for life as well.
But the other half is now filled with air, so it's still full of something.
That's always my thought on the subject, the glass is completely full it's just filled with different things