Physical has five traits, characteristics, or descriptions. Line, form, mass, color, and texture.
Light, reflecting from surface is color, is the most important one as it determines what we see.
Mass is size. The sizes of physicals, in relation to each other, determine proportions.
Proportions can most easily be described, or analyzed, as a pleasing balance for aesthetics.
All parts must be balanced equally for the highest level of aesthetic pleasure.
This principle is not adhered to in much of residential design and construction because of unawareness or other factors given a higher priority.
If you consider yourself serious about the beauty of your residential environment, inside and outside, you must adhere to the priority importance of proportions.
Look around. What do you see? How do you react? How does it make you feel?
What is the status, or role, of proportions where you live?
Food for thought.