Here's a few quotes to compare with the thoughts of Polanyi on trust and the impossibility of rigorous doubt.
'..., when human beings think too carefully and minutely about an action to be taken, they cannot make up their minds in time to act. In other words one cannot correct one's means of self-correction indefinitely. Their soon must be a source of information at the end of the line which is the final authority. Failure to trust its authority will make it impossible to act, and the system will be paralysed.' (p.157).
'The mind-body must, of course, trust that information [from memory, FT] in order to act, for paralyses will soon result from trying to remember whether we have remembered everything accurately' (p.158).
'Whether trusting our memories or trusting the mind to act on its own, it comes to the same thing: ultimately we must act and think, live and die, from a source beyond all "our" knowledge and control.' (p.160).
From Alan Watts, The Way of Zen
Artikel t.a.v. Polanyi over systematische e.a. twijfel in Personal Knowledge http://blogger.xs4all.nl/vstekst/articles/349143.aspx