What principles of design is subjective to an individual viewer’s impression or opinion?

When subject gets divided into subject and object, the subject forms some impression about the object. This is called subjective impression about the object. I think nobody can object

you make more money, you can get a better job, you have a better education, you are wanted more by most employers.

a chromatic scale uses the twelve tones of the octave, while a regular scale only uses eight, or seven different notes (as the first note is played twice)