Re: Deborah G. Mayo • Revisiting Popper’s Demarcation of Science
I think Peirce would say that any struggle to pass from the irritation of doubt toward the settlement of belief is a form of inquiry — it’s just that some forms work better than others over the long haul. Instead of a demarcation Peirce describes a spectrum of methods, graded according to their measure of success in achieving the aim of inquiry.
Inquiry Into Inquiry 