there is disproportionality in the works.

senior positions that require many years of experience for entrancy due to the nature of the job may suddenly go vacant with noone to fill them.

when older people, {people who understand how to retool and operate a VLSI plant for example, people who are ATCs or surgeons} die and there is only a pool of young inexperience to draw from we will have to make do without some of these things, change laws to allow reduced qualifications, and or accept things like nuclear accidents as a learning curve until we have experienced people ,[after the replacements make time in]