The absolutist view of mathematical knowledge has to the acceptance of the opposing fallibilist view of mathematical knowledge. This is the view that mathematical truth is fallible and corrigible, and can never be regarded as beyond revision and correction. The fallibilist thesis thus has two equivalent forms, one positive and one negative. The negative form concerns the rejection of absolutism: mathematical knowledge is not absolute truth, and does not have absolute validity. The positive form is that mathematical knowledge is corrigible and perpetually open to revision. In this section I wish to demonstrate that support for the fallibilist viewpoint, in one form or the other, is much broader than might have been supposed. The following is a selection from the range of logicians, mathematicians and philosophers who support this viewpoint: