Perhaps there ara many questions in the mind of every structure engineer or reaserchers, for example:

1-1: What is our understanding of the optimized structures available in the nature, and how much could we really copy the idea behind them to design our structures?

1-2: Are all of the structures in the nature fully optimized?

1-3: Is the optimization in the nature a permanent and continues process?

1-4: What are the characteristics of the optimized structures in the nature?

1-5: Does the follow-up and compatibility to the nature lead us to any type of optimization?

2-1: Is there only one and unique optimized structure for every specific problem? Can get to this solution?

2-2: How much are the share of each parameter in an optimized structure (materials, loading, and constraint)?

2-3: Is the optimized structure for loading essentially the lightest structure?

2-4: Is any ratio between dimensions of components inside an optimized structure?

2-5: Are the characteristics of an optimized wooden and an optimized metallic structure generally the same?

3-1: Is an optimized structure made of components independently optimized?

3-2: Or, does optimization of a structure lead to optimized single components?

3-3: Is there any optimum infrastructure for an optimum structure?

3-4: How much accurate and reliable are the outputs of the optimization of a structure?