Agreed. Let me clarify. Olive oil, flax oil, and hemp oil are all good unsaturated oils. However, heating unsaturated oils--especially flax oil--will cause them to form an unduly high percentage of lipid peroxides. Of these three oils, olive oil is capable of taking the most heat before oxidizing, which makes it the best for cooking of these three. The tradeoff between saturation and oxidation is a compromise, since the more saturated oils are generally more resistant to oxidation. Still, I do not want to compromise all the way to coconut oil, which is very stable for cooking, but highly saturated. (I know nothing about mustard seed oil.) Therefore, for cooking, IMO each person should want to use the "least saturated" oil that will still do the job. Although I classified olive oil this way in my earlier post, it was not meant to imply that it was saturated, but rather that it is an oil that is the most unsaturated that is still useable for cooking.