When people say it isn’t exactly rocket science what do they mean? Well for the uninitiated it’s seemingly a jumble of complex maths, physics and engineering. The question I have always asked is how complex is it to understand and can it be presented in a more accessible level for the lay reader? This is a floating text version, a better (cheaper) later version with better graphics/math layout may be found by searching Amazon : B07DDK7D68. Regards (Ray Hill, Author).