The real structure is an intermediate state between various limits. For example, the two Kaikoule structures of the benzene ring are two limit states. Under one limit, there is a complete double bond
between 1, 2 and under another limit, there is a complete single bond between 1, 2. That is true.
Between 1,2 in benzene is between single and double bonds, and that is indeed the case. Therefore, resonance theory clearly expresses a structure that can only be described clearly using molecular orbital theory. It is clearly expressed by the valence bond theory. It is a bridge between molecular orbital theory and valence bond theory. It is a scientific accuracy for scientists. Find a perfect compromise between sex and ease of use.