Here is an interesting false proof as to how to multiply $2 \cdot 2$. Taken from this link.
alt text http://img.math-fail.com/wp-content/uploads/joke.png
$\Large\textbf{Another example}$:
broken image fixed (click 'side-by-side' to see the difference; image retrieved via Wayback Machine); for more info, see https://meta.mathoverflow.net/a/4058/70594
Glorfindel
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Here is an interesting false proof as to how to multiply $2 \cdot 2$. Taken from this link.
alt text http://img.math-fail.com/wp-content/uploads/joke.png
$\Large\textbf{Another example}$:
Here is an interesting false proof as to how to multiply $2 \cdot 2$. Taken from this link.
$\Large\textbf{Another example}$:
replaced http://skullsinthestars.files.wordpress.com/ with https://skullsinthestars.files.wordpress.com/
Community Bot
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Here is an interesting false proof as to how to multiply $2 \cdot 2$. Taken from this link.
alt text http://img.math-fail.com/wp-content/uploads/joke.png
$\Large\textbf{Another example}$:
alt text http://skullsinthestars.files.wordpress.com/2008/12/neg1equals1.png?w=640
Here is an interesting false proof as to how to multiply $2 \cdot 2$. Taken from this link.
alt text http://img.math-fail.com/wp-content/uploads/joke.png
$\Large\textbf{Another example}$:
alt text http://skullsinthestars.files.wordpress.com/2008/12/neg1equals1.png?w=640
Here is an interesting false proof as to how to multiply $2 \cdot 2$. Taken from this link.
alt text http://img.math-fail.com/wp-content/uploads/joke.png
$\Large\textbf{Another example}$:
