@Khethil,
Sorry folks, no revelation or Big Synthesis here, just some all too vague and unripe thoughts, and possibly completely unrelated. Does any of you likes horror-movies? Why are they made for really? Why are we so fascinated by them? Do they compensate for something? Do we miss fear in modern-day society, so often equalled with the jungle but in fact quite opposite from it (the development of society can be seen as a clear answer to fear: we gather and organize). Yes, we can actually miss fear, and that does say something about its nature. Whatever causes it, whatever be its relation with the unknown, it is Really Important to us, it is indeed the spice -even the essence- of life. (Parenthesis. Fear releases huge quantities of adrenaline. What do we really need and what do we miss most when we don't have it? Seems all connected with some body fluid, even happiness is enough dopamine in the brain. Where be my beer? ;-) ). We talked about what follows from fear, what is originated by it, fear driving us first into our cave but ultimately out of it, confronting, exploring, always resulting in some triumph, in growth of strenght, of body and (inevitably) mind. Let me (quite hypothetically) expand this idea to the limit (and now I sense some danger ahead). Without fear there would be almost nothing that is relevant to us, there would be no evolution, no expansion, no change, no striving, because all striving has some relation with the fear of death, with the fear of not having enough time for whatever be our projects. Fear may be practically equal to life, death being the only condition of being without fear, death threatening when fear gets lesser (*). Where is our "shot", our whiplash, our detonator? When you think of it, can there ever be conceived something truely human that is not an answer to fear, that cannot be related to it? Religion? Only too obvious! Science? So often for protection. Philosophies? Consolations (often worthless). Kids know fear, not because of the known or the unknown, but because they are humans, not lizzards or plants or bacteriae, these being the only kind of creatures that (can) live without fear. It does not need a great neurologist to tell you that fear is only possible in a well developped cortex, that itself may only have evolved through a complex interaction with fear. How sharply one perceives and thinks when one hears the noises in the bushes (c'mon Sarek, be a man ;-) ), would we ever suppose it was a cat if there was not some fear to cause the supposition? Would we even leave our cosy room if we didn't hope for the noises? Do we seek fear because we seek the world? "The silence of these vast spaces frightens me" (Pascal), so we let our rocket engines roar. Must be continued. Sorry if I didn't listen, even more sorry if I said nothing. Better next time.
(*) The fear of death being the fear not to fear anymore? Hold yourself, Catcha!