The election for president in America is held every 4 years, which fit the United State quite well; a private coal mine in our province (Shanxi) has changed 3 executives only in 4 years, which is acknowledged as a dramatic success.
Therefore, how long should a potentate stand in power should vary in different professions. What's more, this rule should be flexible when some special events come out. UFor example, we should reelect our president but a war sets up; we plan to change the leader of our research group next week but the old one just get an significant subject and its fund; we will meet our new executive tomorrow but he/she suddenly suffer an accident … Should we determine our changing routine? Apparently not.
To sum up, I concede the speaker's claim that the surest path to success for any profession is revitalization through new leadership and thus those in power should step down after a proper time span. Nonetheless, the speaker rigidly claims that those potentates must be changed every five years. In the final analysis, the appropriate attitude towards this issue, in my appreciation, should be a balanced one that each profession must has its own regulations for the period one leader in power and this decision should be made before an through investigation of the character of the enterprise itself and the status in quo.