A question of specialisation and education. Simply put, in an anarchist society, how would specialisation and education work? Take doctors for example: in order to maintain the standard of healthcare we currently have, doctors in any society (anarchist or not) need a considerable investment in time/resources. It takes 7 years to become fully 'qualified' as a doctor in my country; 

So, how would people be incentivised to become doctors under anarchism? What would insure there was enough doctors for the communities needs? How would the resources needed to train said doctors be allocated, and by whom?