http://www.britannica.com/topic/incommensurable
My dear girl do you wish to be married?
Don’t study maths, else you’ll be harried.
Men are afraid of us
Women can’t mate with us
So one might as well die and be buried.
My reaction may seem too extreme
For surely one may get some esteem;
For playing with irrationals,
viewing incommensurables
is a metaphor for political themes.
For whole numbers are easy to see
And fractions quite rational be.
But the square on the diagonal
Is totally irrational
And from the circumference’s demands we may flee.
And comparing the circle and square
Shows unconmensurable flair.
And human folk too
Exhibit this too.
So in marriage don’t expect all to be fair.
A straight line can be tangent to a curve
But never can two such things merge.
But if the line keeps quite still
the curve then might well
Curve back with delight in its swerves.


This extract below is intriguing for its unstated assumptions.Would it apply to coal miners or builders?

This method works if you have time to allow it.I used to do it for headaches