lol, block paving dont move up and down. if it goes down it stays down,it ceertainly dont come back up in any way. you clearly dont understand the qualities of compressed sand.
There are few constructed surfaces that do not 'spring' or 'trampoline'.
Engineering bods take this into account when designing and building roads and paved surfaces.
They go down and they come back up again.
FACT.
You seem like a bright fellow ashymo', why so argumentative?