the world of physics recognises both the conservation of momentum and the conservation of kinetic energy. However how can both be conserved simultaneously in any given situation if one is equal to mv and the other ½ mv²? One is directly equal to 'v' and the other 'v²'. It doesn't take a brilliant mathematician to observe that this is clearly impossible.
therein lies the dilemma of the scientific community. When people do not realise their own intellectual limits, they do not enter into the struggle to understand that which they have failed to comprehend. Learning is no substitute for understanding. It is in admitting a lack of understanding and in wrestling with the problem that the mistakes of the past are rectified