Sisyphus Robot Condemned to Tie Necktie

Here is a robot created to demonstrate how to tie and untie a necktie.
So that's what it does.
Over and over. What a life

...dramatically [and cruelly] demonstrates how engineering principles and methods can be used to solve unusual problems not normally associated with technology.

The "brains" of the machine consists of the sequence of number pairs that determines which motor moves how far...

Video clip here...
ASME - Why Knot? Exhibit