In a fuel cell stack, an inlet fuel distributor comprises a plurality of fuel distributing passageways of substantially equal length and equal flow cross section to uniformly distribute fuel cell inlet fuel from a fuel supply conduit to a fuel inlet manifold. It is known that anti-camcorder systems using a color modulation can be circumvented by using low shutter speed in the camcorder. This finding provides a basis for methods of engineering modular polyketide synthases and polyketide synthasenonribosomal peptide synthetases.