A quark-gluon plasma, a hypothesized phase of quantum chromodynamics of interest to physicists, is supposed to exist at conditions of extremely high temperature or density that never naturally occur on Earth. The conditions engendering quark-gluon plasma were thought to have occurred in the first hundred microseconds or so of the universe. It follows that physicists will never be able to observe quark-gluon plasma.
Which of the following, if true, most seriously weakens the argument above?
【选项】
High temperatures and densities not usually found on Earth can be created in particle accelerators.
选项是否正确？