It might be, but it is also a shared culture. People like to work with people who have a shared background and understanding.
The natural sciences are similar in that you have to have a PhD to be taken at all seriously even though most of the time there is really no difference between a person with a BSc and 5 years of experience and someone with a PhD.
The natural sciences are similar in that you have to have a PhD to be taken at all seriously even though most of the time there is really no difference between a person with a BSc and 5 years of experience and someone with a PhD.