Why there are many requirements for recruiting talents

The first is the rigid indicators of the position itself, such as the driver cannot be color blind, must have a license to drive related equipment, etc. If these requirements are not met, the job cannot be guaranteed; the second is the soft indicators, such as the best Male, 25 to 35 years old, college degree or above, local household registration priority, etc. The soft indicators are that due to fierce job competition, recruiting units have the conditions to select talents they think are more suitable; the last are invisible indicators, such as my father is Li Gang , carrot recruitment, hereditary system, etc. There is no solution to this. . .