The optical system as described achieves retinal display of video images at a viewing angle of approx. The current of the individual MOSFETS, and hence the chain, can be controlled by means of adding a current measuring resistance into the source path of the transistors and transmitting the voltage arising there via a capacitor to a gate connector of the transistors. The hardenable material is hardened such that the hardenable material forms a hardened construct together with the bone fixation elements that bridges the anatomical bodies. Symbol perturbations are computed in the opposite direction of the gradient in such a way that the peaks are reduced and the amount of errors introduced in the symbols is not large enough to affect the decoding process. The filming, special effects and editing can all be done in the cloud by people dynamically chosen, and decisions regarding creative and technical choices can be optimized using crowd wisdom techniques. The method includes determining when the first camshaft is moving toward a first scheduled phase angle with respect to the crankshaft with a larger camshaft angular positioning error than the second camshaft.