(t, now) = ((t, now), now) = ...

Suppose a physical theory is parametrized by a time variable t. Considerations lead to a second dimension of time (or super-time/meta-time) when things 'really' are, t', and in fact there is an infinite sequence t'', t''' ... Since this phenomena is so common it's possible that it is a natural feature of time. This suggests a parametrization of the theory (t, now_t) instead, where

(1) (t, now_t) = ((t, now_t), now_t) = ...

The question then is what relations are there among the now_t for different values of t. These are discreet, infinite dimensions.