[SPOILERS] SOMA and The Matrix similarities

[cantremember]

I think they can modify it, but my default their bodies are modeled from what I presume some kind of DNA, so in the same way that an exact "image" of their brain would resume to function the same way the real one would, I suppose the bodies would evolve the same, although they could easily modify themselves to be immortal.

I think they are stuck in the simulation, they can edit aspects of the simulation, but have no control over the physical probe, and would be unable to foresee any impending doom (probe running out of power, or crashing into something or any other physical damage), but presumably an event unlikely enough to not worry about it.