He applied Wittgenstein 's radical turn of displaying the nonsense in place of refuting a philosophical theory .
He turned to Berkeley 's idealism where he teased the failure to make sense of ideas as entities in the mind out into the open .
Applying Wittgenstein 's radical turn of displaying the nonsense in place of refuting a philosophical theory , he turned to Berkeley 's idealism where he teased the failure to make sense of ideas as entities in the mind out into the open .