We are learning lessons in the simulations that would have been difficult to discover otherwise.
First, their simulations fail after the gravitational collapse stops, so they cannot show what replaces a black hole.
mid-14c., "a false show, false profession," from Old French simulation "pretence" and directly from Latin simulationem (nominative simulatio) "an imitating, feigning, false show, hypocrisy," noun of action from past participle stem of simulare "imitate," from stem of similis "like" (see similar). Meaning "a model or mock-up for purposes of experiment or training" is from 1954.
simulation sim·u·la·tion (sĭm'yə-lā'shən)
Close resemblance or imitation, as of one symptom or disease by another.
Assumption of a false appearance.
Reproduction or representation, as of a potential situation or in experimental testing.