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October 2, 2026

# The bottle was never one question.

By Michael Mancuso · October 2, 2026 · Originally published on LinkedIn

The bottle was never one question.

You have seen the post. ChatGPT uses a bottle of water every time you hit enter. It is on protest signs. It is in comment sections. It is how a lot of people now picture a prompt.

Here is where that bottle actually came from.

In 2023, researchers at UC Riverside published a real paper. They did not say one question drinks a bottle. They said a 500ml bottle covered roughly 10 to 50 medium GPT-3 answers, depending on where the servers sat and how the local power was made.

Then a 2024 Washington Post story took the same kind of math to a 100-word email written with GPT-4. The headline became “a bottle of water per email.”

Social media did what social media does.

Email became question.  
Ten-to-fifty answers became one.  
A range became a prop.

The bottle survived. The sentence around it did not.

OpenAI later published its own figure. An average ChatGPT question uses about 0.000085 gallons. That is roughly a third of a milliliter. A fifteenth of a teaspoon.

A 500ml bottle at that number is about 1,500 questions.

Not one.

The researcher behind the original paper has since put a modern prompt closer to a sip than a bottle. The meme did not update.

I’m not saying water is fake. Put a new campus on a dry town and the fight is real. Cooling towers are real. Aquifers are real.

I am saying we took a paper about a conversation, turned it into a headline about an email, and then taught millions of people that a single prompt empties a Dasani.

That is not environmentalism.

That is a game of telephone with a recycled bottle.

If you want to argue about data centers, argue about data centers.

Stop hanging the argument on a number the original paper did not print.

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