It isn't really. There is a difference between keeping a get out cause as a safety net in case of bejng proved wrong and knowing you may be fallible from the outset. Which may be the result of age, though there have been some astonishingly mature entings here while some displaysof childish petulance can be ascribed to those of riper years... so I should refrain from endorsing whoever it was who said that they weren't young enough to know everything.