ok, I need more actual evaluations from the black box simulator, let's pick the next point that we think is best. And best is judged by will this value of x return a c(x) that meets the constraint and is smaller than my previous f(x)
so now I have an approximation for f(x) and c(x) because in the black box world the assumption is that evaluating the true f(x) and c(x) is computationally costly