Thanks for the response to my post. May I attempt to clear up some confusion I may have caused by referring to seconds?
We do not have to consider man-made units or different reference frames, I can directly compare any length with any other length relatively easily (in principle at least) but how do I compare one stretch of time with another except indirectly by referring to relative changes in position? Moreover, I do not have to assume spatial relativity, it presents itself to at least two of my senses, but I have to assume there is a temporal dimension and grant it size by measuring something else. Nor should we allow intuition, common sense, and it feels right to guide us in matters of basic reality as they have all proved untrustworthy further back along the chain of existence.
Positing that time is responsible for motion, besides begging the question, rather puts the cart before the horse - we use motion or displacement (in our clocks) to determine time taken not vice versa. Also smacks of conjuring up supernatural forces to explain effects. You say while seated that time passes because stuff happens. But you see different stuff because you are in a different place, by thousands of miles if not more, no matter how tightly glued you are to the chair - the only measurement you can make relating to time is that of the distance you have moved.
As for stating that we move in only one direction through time this is as meaningful to me as someone affirming the presence of the Holy Trinity - there is no witness to either of these scenarios so where did the numbers come from? Perhaps there are three directions in time and only a Holy Unity! Or, more likely, a zero for both.