Let's Take A Closer Look

Half Full or Half Empty?

Objectively speaking, the glass contains water up to the half-way point. The rest is a matter of interpretation. Half-fullers interpret the reality in a positive context. Half-emptiers interpret the reality in a negative context, focusing on what’s missing. So which is it? Is the glass half full or half empty? The real answer is both because they’re both descriptions of the same glass/water reality.

Optimists and pessimists

The half full/half empty question is posed to demonstrate that the way we answer identifies us as either optimists or pessimists, but that’s quite an oversimplification. Few of us are one or the other all of the time. Most of us are optimistic about some things and pessimistic about others.

This half full or half empty question forces an either/or choice 

It presumes there are only two choices, when in fact there are many more ways to look at some assumed-to-be water in an assumed-to-be glass. In a 2020 article about presidential political polling, Would You Rather Eat a Bowl of Sand or a Bowl of Gravel, I wrote about the forced-choice questions we’ve seen in surveys that ask us to choose between only two alternatives: yes/no, on/off, true/false, etc. Forced-choice, binary questions, allow for only two answers when the glass and water situation can be described many different ways, depending on one’s point of view:

• Realists say the glass looks to be filled to the halfway point.
• Engineers say the container is twice as big as it needs to be.
• Psychologists say how does this glass of water make you feel?
• English Literature teachers say what is the symbolism of the glass filled halfway?
• Cynics say what difference does it make?
• Nihilists say neither the glass nor the water exists.
• Woody Allen says what, no ice?
• Skeptics say how do I know it’s water?
• Scientists say the glass is full; half with water and half with air.
• Freudians say you want to have sex with your mother or father
• Socialists say the glass and the water belong to all of us.
• Capitalists say the glass and the water are mine and both will cost you.
• Valley girls say what-everrr.
• Curmudgeons say hey I ordered scotch and water.Americans say the glass should be lots bigger and the water should have lots of sugar in it.

Bonus

Did you know that the sequence in which choices are presented affects the outcome? When two choices are presented in sequence, the first choice always gets an extra share just because it came first. It’s called order bias. Its cousin, recency bias, comes into play every time we are asked to choose from long lists. Most of us can’t remember long strings of information. 

Think about fancy restaurants where the waiter recites the specials as an excruciatingly detailed poetic soliloquy that goes on and on until we’re numbed with brain fog. When the list is long and we have no preference, we often pick the last choice because it doesn’t require much mental effort to say, “I’ll have the last one.”

I’m sure you’ve noticed how “half-full” always comes before “half-empty,” surely inflating the number of optimists. If the first choice was “half empty,” the number of pessimists would likely be over-reported.

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The author is a researcher, teacher, and writer who looks at old things in new ways, sees the commonplace in greater detail, makes connections where others see none, and explains complex subject matter in simple, conversational language. More than 400 of his articles are posted on this site.