PD wrote:
TomGee wrote:
Worms doesn't know, that's why he sent you to a website. Spacetime is
a fictional place invented as a math construct so that we can calculate
the motion of objects through time.

According to Einsein, every object has a so-called "world line" which
indicates the object's past, current, and future position wrt its
motion through the universe.

Unroll a paper tape as you walk and mark it every 10 seconds as it
unwinds. Congratulations. You just make a world line. No math construct
there, Tom.


How stupid is it when you think that is a world line? How stupid is it
when you don't even know what a math construct is?


I'm in a room that is 10' by 12' by 14'. Is the central 2'x3'x5' block
of space a math construct or is it really there?

It's a shame that such a high-rated physicist (as you rate yourself)
has no clue as to what constitutes a math construct. Somewhere along
your educational trail someone must have explained to you the
limitations of mathematics in relation to conclusions about reality.