A useful rule of thumb for evaluating a field you're not familiar with is 'Sturgeon's law'. Sturgeon's law is a refutation of claims of the form "don't bother l

A useful rule of thumb for evaluating a field you're not familiar with is 'Sturgeon's law'. Sturgeon's law is a refutation of claims of the form "don't bother looking at that because 90% of it is crap". The law states that 90% of everything is crap, and hence such claims prove too much.