1. A method, comprising: interpreting a nominal pump schedule corresponding to a nominal value for each of at least one fracture control parameter; interpreting a plurality of environment parameters including at least one uncertain environment parameter; interpreting at least one uncertainty description, each uncertainty description corresponding to one of the uncertain environment parameters; defining an objective function; and determining an optimal value for each at least one fracture control parameter according to: the objective function, the plurality of environment parameters, and the at least one uncertainty description.