On the right side, we may find:
* consistency
* metaphorical
* discoverability
* ease of access
* attention to detail
On the left side, we'd find the opposite.Where to be on the spectrum depends on context. For example, a sales page need not be as concerned with consistency as an application.
Being conscious of the existence of these concepts is key. Example: what does '...' mean in many applications? If you don't know, did you subconsciously?
And don't forget, design is partially subjective, however, a decision may be objectively inconsistent, un-metaphorical, etc.