Nuts! Poem by Ima Ryma

A bunch of researchers came by
To watch me do my nutty thing.
I guess they want to find out why
I am so good at nut cracking.
Between a rock and a hard place,
I regulate my use of force,
Evaluating case by case
What's needed to crack in due course.
Showtime, so I want to do well
To aid humans in solution
Of how the use of tools can tell
Of the human evolution.

This monkey must be out of whack.
Why can't I make this damn nut crack?