---
title: "Meaning & Key Takeaway of: Just about every adult human being back…"
description: "\"“Just about every adult human being back then had a brain weighing about three kilogrammes! There was no end to the evil schemes that a thought machine..."
image: "https://sms4smile.com/quotes/i/801/kurt-vonnegut-41_computers_just-about-every-adult-human-being-back_1720979.jpg"
---

#  Just about every adult human being back then had a brain…

![“Just about every adult human being back then had a brain weighing about three kilogrammes! There was no end to the evil schemes that a thought machine that oversized couldn't imagine and execute. So I raise this question, although there is nobody around to answer it: Can it be doubted that…” quote by Kurt Vonnegut](https://sms4smile.com/quotes/i/801/kurt-vonnegut-41_computers_just-about-every-adult-human-being-back_1720979.jpg)   [Download](https://sms4smile.com/quotes/i/801/kurt-vonnegut-41_computers_just-about-every-adult-human-being-back_1720979.jpg) [Open image](https://sms4smile.com/quotes/i/801/kurt-vonnegut-41_computers_just-about-every-adult-human-being-back_1720979.jpg)

> ““Just about every adult human being back then had a brain weighing about three kilogrammes! There was no end to the evil schemes that a thought machine that oversized couldn't imagine and execute. So I raise this question, although there is nobody around to answer it: Can it be doubted that three-kilogramme brains were once nearly fatal defects in the evolution of the human race?””

[Kurt Vonnegut](https://sms4smile.com/quotes/author/kurt-vonnegut/)

## About This Quote

This interpretation was drafted with AI assistance. It is one reading of the quote, not the author's own explanation.

Large brains once posed evolutionary risks, questioning progress and defect.

**In simple terms:** Big brains were once a flaw.

Key Takeaway

Recognize that evolution is imperfect.

Themes

evolution brain defect progress

Mood

curious analytical

Type

essay philosophical

When to use this quote

- scientific debate
- historical analysis

Key Concepts

biology philosophy

Questions to Reflect On

- What ‘flaws’ become strengths?
- How do we define evolutionary success?

A Different Perspective

Progress can be messy and unintended.

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