Why stress the difference between pros and amateurs? Isn't it a sliding scale? In more than one dimension?
Where, or indeed when, does one end being a pro and begin being an amateur?
And what is so special about being a pro? OK, a pro probably can afford nice gadgets to work with, but if he isn't lucky, it's shooting sausages, pizza's, perfume bottles, watches and leather salon sets. Halleluyah!
At least an amateur doesn't have to waste his negatives on commodities. Doesn't have to work to order.
Cheers