Cat
Cats demonstrate approximately 23 distinct sleeping positions, transitioning between them according to internal scheduling algorithms inaccessible to human comprehension. A cat positioned comfortably at 11 PM may occupy an entirely different bed quadrant by 3 AM, potentially including the human's face, chest, or that peculiar spot directly behind the knees.
This positional fluidity extends to departure events. Cats exit sleeping arrangements without notice, frequently at hours optimised for maximum human disturbance. They return with equal unpredictability, sometimes bringing small deceased offerings that complicate the sleeping surface considerably.
Pillow
The pillow maintains its assigned position with near-perfect reliability, moving only in response to external forces. Where placed, it remains. Where compressed, it slowly rebounds. This positional fidelity represents perhaps the pillow's defining virtue, a quality so fundamental that its absence would render the object categorically useless.
Occasionally pillows migrate during particularly vigorous sleep. This movement, however, correlates directly with human activity rather than pillow preference. The pillow harbours no agenda regarding its location, expressing no opinion on whether it belongs beneath head, between knees, or clutched defensively against chest during anxiety episodes.