in
.
58.2 This property, possessed by a material object which is motionless in a time-system
, of being situated in every oblique slice of its stationary situation is a fundamental physical law of nature. Namely, percipients cogredient with different time-systems can 'recognise' the same material objects. In other words, the character of a material object is not altered by its motion.
58.3 The motion of a material object
is 'regular' when if