I would say that the majority of our learning comes from the experiences of others. It might come down second, third, or fourth hand, or even be an ongoing truth handed down over millenia. We don't necessarily have to experience it ourselves. But when you say 'base' are you saying something that will significantly change the way we think?
Mostly we don't change, except by actually experiencing. This is what makes the greatest impact on us. This is what can,and so often does, change the way we look at life. Having done it; having been there; having it happen to us. Experience, that brings about those basic changes.