For every purpose of our calculation
Is spherical. Don't worry about how;
This is no matter for your perspiration.
It's merely an assumption we can make
To ease the calculations we must do;
A cow's a sphere; a ball, a point; a rake,
A line. We take them to be such because
The real truth of the friction and the angles
Is not the point of what this physics does:
Reality to often merely mangles
Pure kinematic truth and certainty:
Let life be perfect, cows live spherically.
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