Balance a Stick on its End on a Finger/Mistake

Source Work

 * The Puzzles:
 * Henry van Etten
 * $113$
 * $113$

Mistake

 * How can a stick be made to balance securely on the tip of a finger?

The solution is given as:
 * Force the tips of three knives into the stick, so that the knives hang well below the finger.
 * The centre of gravity of the entire arrangement will then be below the fingertip and will be stable.

Correction
You do not actually need as many as $3$ knives.

$2$ will do just as well.

In fact, any number of knives, as long as the points at which they are forced into the stick form a regular polygon, can be used.