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Hello there.

This is Numberphile. We mainly post videos about mathematics and just numbers in general.

Super-fast way to tie Shoelaces

Super-fast way to tie Shoelaces

Just for fun... Featuring Matt Parker. Some REAL knot action at: http://bit.ly/Knot-a-Phile

More videos with Matt: http://bit.ly/standupmaths --- And Matt's book: http://bit.ly/Make_Do_Numberphile

The iPhone of Slide Rules

The iPhone of Slide Rules

Freaky Dot Patterns

Freaky Dot Patterns