my disagreement was with 1+1 always =2, not with what is time.

I agree with you that if time= temporal causality effect (I am hungry -go kill thing, now not hungry but lusty- go find cave girl) time has always existed since the big bang. Things get born, created then they age/change and eventually are no more. Even if you assume time travel like Doctor who, you have still not broken this, it will just be much more complicated.

But is that what Jay was asking? let's be honest we use 0-9 because it was convenient we think of the day as 24h because that is how long the rotation of the earth took when we created our way of measuring, there is nothing magical about it. We also think of the year as 365 days but nothing magical about that except that it was what it took the earth to go around the sun.