1.The obvious reason for this is that education becomes more specialised as you get more of it 2.A second reason is that education is a sifting device 3.A third reason is that the productivity of higher education declines as people spend longer in it
1. A modern fashion comes as getting higher degree. 2. When someone choose to receive more education, they have to give up the opportunity of working and making money, by contrary, they will pay for their further education. 3. An investment states that many PHDs during the recession came to have jobs not very well such as “cashiers”. The 3 reasons are : -you spend less time on acquiring much broader knowledge. -the more people get further degrees, the less worthy these degrees would be. -the productivity of education declines as people spend longer time on the education.