No Never and Not At All There are a lot of differences in abilities within the system alot more than can be used to be considered to say they are just two modifications of one system
Palm oil is produced from the fruit of the Elaeis guineensis palm. It has been shown to be stable and versatile even without hydrogenation. Margarines and shortenings made from palm oil do not...
A theory can definitely be modified. When there is ample evidence of the theory's correctness (sorry, cannot think of the proper word there), then the theory can be declared a law.