“The only source of knowledge is experience”
~ Albert Einstein ~
I believe real, thorough, in-depth knowledge can only come from experience. We can learn other things from being told or taught; facts, figures, details… but real felt knowledge comes from living a situation and being a part of it. Example; anyone can tell you that if you put your finger in the fire it will get burnt – but only if you actually do so will you fully understand the implications and have clear knowledge of what that means.