Appraisal VS Resignation

A newly-joined trainee engineer asks his boss " What is the meaning of appraisal ? "

Boss : " Do you know the meaning of resignation ? "

Trainee : " Yes, I do. "

Boss : " So let me make you understand what an appraisal is by comparing it with resignation. "In an appraisal meeting they will speak only about your weakness, errors and failures.In a resignation meeting they will speak only about your strengths, pastachievements and success.

During an appraisal you may need to cry and beg for even a 10% pay hike.In a resignation meeting you can easily demand ( or get more without asking) more than 50-60% pay-hike !

During an appraisal, they will deny promotion saying that you did not meet the expectation, you don't have leadership qualities, and that you had several drawbacks in reaching objective/goal.

During resignation, they'll say you are the core member of the team;
that you are the vision of the company, and so " How can you go ? ";
you have to take the project on your shoulders and lead your juniors to success.

There is a 90% chance of not getting any significant incentives after appraisal.
There is a 90% chance of getting an immediate pay-hike after you put in your resignation.

Trainee : " Yes, boss, good enough. Now I know what to do. When you are about to do my appraisal, I will resign. "