There was once an infinitessimally small point of no fixed abode. It got bored and decided to jump around a bit and created an infinitessimally thin line of infinite length. After a while the line jumped around too and produced an infinitessimally thin plane of infinite area. This area soon got bored and jumped around making an infinitessimally light space of infinite volume. Nothing is unchangeable because nothing doesn't exist.
Nothing is unchangeable because something exists.
It can't be done. It's a hardware problem. OR It can't be done. It's virtually impossible.