Something interesting I found in the wikipedia page: > One reply to such criticisms is that even though the Drake equation currently involves speculation about

Something interesting I found in the wikipedia page: > One reply to such criticisms is that even though the Drake equation currently involves speculation about unmeasured parameters, it was intended as a way to stimulate dialogue on these topics. Then the focus becomes how to proceed experimentally. Indeed, Drake originally formulated the equation merely as an agenda for discussion at the Green Bank conference.