Abstract
The last forty years have produced a dramatic reversal in leading accounts of science. Once
thought necessary to (explain) scientific progress, a rigid method of science is now widely
considered impossible. Study of products yields to study of processes and practices, .unity
gives way to diversity, generality to particularity, logic to luck, and final justification to
heuristic scaffolding. I sketch the story, from Bacon and Descartes to the present, of the
decline and fall of traditional scientific method, conceived as The Central Planning Bureau
for Science or as Rationality Czar. I defend a deflationary account of method and of rational
judgment,. with emphasis on heuristic appraisal and cognitive economy.