For what purpose do design architects use smaller copies of houses and entire neighborhoods?

The goal of architects is to see the mutual arrangement of houses; in the design process, the appearance, volumes, dimensions, useful area of the building, structure are determined in detail and in detail.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.