Then, without apparent cause, pressure started to rise in the uppermost segment of the motor. Because reality is richer than simulation, and experience beggars computation. Reality must take precedence over everything , or you'll wind up in deep doo-doo. We can happily spend the next 20 years developing faithful simulations of the physics discovered in the last century and creating thereby tools which will empower people to create products we can't begin to imagine today. But let's remember we're merely bottling a vision of the real world, not the real thing.
Reality always asserts itself through surprises, and that's part of what makes life worth living.