The Illusion of Doubt confronts one of the most important questions in philosophy and beyond: what can we know? The radical sceptic's answer is 'not very much' if we cannot prove that we are not subject to (permanent) deception. For centuries philosophers have been impressed by the radical sceptic's move, but this book shows that the radical sceptical problem turns out to be an illusion created by a mistaken picture of our evidential situation. This means
that we don't need to answer the radical sceptical problem 'head on', but rather to undermine the philosophical assumptions that it depends on. For without these assumptions, radical scepticism collapses all
by itself. This result is highly significant, as it manages to dissolve one of the most intractable philosophical problems that has bedevilled some of the greatest minds until the present day.