According to McKinsey, people usually remember one, two, three, but not four, five, six, so everything should be summarized in less than three. This is now widely circulated in the business world "30 seconds elevator theory" or "elevator speech".
Some people are always complaining: why can't they ever get promoted, and why is he the one getting promoted this time? Is it really just someone else's fault? Maybe it's your "sick" thinking that's holding you back.
Under the performance appraisal system, which is characterized by strengthened accountability, it is not uncommon for superior managers to shirk their responsibilities and let their subordinates bear the consequences of their mistakes.