The absolute absurdity of God

[SteveII]

What? Quantum mechanics describes quantum events of real quantum particles in the four actual dimensions of the universe. Spacetime is a mathematical model of how the three dimensions of space and the one dimension of time might work together. The mathematical model of spacetime is the very definition of an abstract object. Abstract objects are causally effete.  Therefore spacetime does not cause or affect anything.

Ok, so explain to the rest of the class how a quantum field in vacuum requires any particle.
Last time I checked, vacuum is described as the absence of particles.

I really, really don't understand this rabbit trail we are going on and how it relates to any part of any argument, but...

According to present-day understanding of what is called the vacuum state or the quantum vacuum, it is "by no means a simple empty space".[1][2] According to quantum mechanics, the vacuum state is not truly empty but instead contains fleeting electromagnetic waves and particles that pop into and out of existence.[3][4][5] https://en.wikipedia.org/wiki/Vacuum_state