It's been said before that all knowledge is free. The only restraint is that you haven't found it yet. All the knowledge that could possibly be is right before you. It is the basis of thought, the lowest form of the mind and the most powerful seed in the universe. The pursuit of science is the pursuit of knowledge and the attempt of mankind to discover all that is to be discovered in the realm of what's real and has, does and will exist. Knowledge could be infinite for all we know, and as a result, the number of permutations and combinations that can be made in shaping what we will know in our lifetime is the act of infinite individuality. Knowledge can last in the minds of people over generations or be lost, and though you may not know the lifetime of a thought, that it may have once died and been lost to history, it may still yet rise again after many years and prove it's worth to you and how you perceive the world abound. It's how everyone learns, and though you may have accumulated a vast amount of knowledge in the time you've had, there is still yet thoughts beyond your imagination that will come...and yes, they've likely been thought of before, but they'll be elemental in your growth.
Analog's underwear are digital. right now they're set to inverse 1 (I think that means they're on my head).