if time could be reversed then the measurements
would also be reversed.

t=2

time is a measurement and nothing else.

so its like using a measurement tape.

measured out to t=3 then back to t=2

why?

because if time were forwarded again at the blue spot

then history would repeat in the same order.

and the ball would once again approach the pink spot
or t=3

else

if you advanced the time measurement to t=4
as the ball crosses the blue spot then
time could not repeat if the time were forwarded
at the blue spot because the next available time
measurement would be t=5

and only 3 units of time would have occured.

t=1 t=2 and t=3






3/4 inch of dust build up on the moon in 4.527 billion years,LOL and QM is fantasy science.