I disagree, it is not universal. 1+1=2 is just a specific system of notation with consistency. There was a time when no human conceptualized this idea of 1+1=2, they did not have numerals or know about addition. Before you get to 1+1=2 you need a bunch of prior concepts that are themselves contingent on culture and history.

> 1+1=2 is just a specific system of notation with consistency.

So, that that is system of notation which has consistency is itself a truth, isn’t it?