Lightly seared on the reality grill.
Thank you, I understand space time is a mathematical model, but what I am expecting as an answer is how time detected in order for it to be measured by a clock?
Again, I'm not sure I understand the question. We know space is there because it separates points and we can measure it with a ruler. Time exists because it separates events and we can measure it with a clock. We now understand that the two things aren't separate and neither are absolute but vary with the reference frame (observer). We know the model of space-time is accurate because it has been extensively tested.