A - It's the result of 4 interacting forces
A mix of objective and subjective dimensions - which are partly the result of a voluntary decision (call it a vision) and to large extent the consequences of a 'situation' :
B - It's a relative and moving state
Everything changes, every dimension evolves. There is a constant need to adjust.
Positioning involves 3 levels, each integrating the 4 dimensions which shape it (vision, market reality, competition & image) :
The positioning must be clear and easy to read
To do a good job, get it right, one must :