A grad student in procrastination tends to stay in procrastination unless external force is applied or better know as ‘Law of Inertia’.
The age, a, of a doctoral process is directly proportional to the flexibility, f, given by the advisor and inversely proportional to to the student’s motivation, m.
Mathematically, this postulates translates to:
Age PhD = flexibility/motivation
For every action towards graduation there is an equal distraction.