Calculation and Simulation are todays effective additions to experimental testing. They save time, allow to specify limiting tolerances and can be used prior to availability of prototypes (which shortens time to market significantly). But you have to model the right boundary conditions, otherwise you will not come to decisions you need. To fulfill, we at AFS have collected lots of experience, so we are flexible to optimize prediction to minimized cost, e.g. selecting the right simulation tool and degree of modeling.