Answer correctly to win! :)

Congratulations on Airmax for a perfect score of 5/5 right now! All challenges have been acomplished perfectly (and within a very short time as well). Current score: 5/5 total 5/20 The next challenges are as follows: Challenge #6: I am in 2000, 548, and 3652, but not 14, 1700, and 950. What am I? Challenge #7: There was a man found on the floor of his house, with a bullet in his head and a gun in his hand. A voice recorder is on the table next to him, with a recently recorded message on it, rewound to the start. The police play the message, to hear the man explaining why he can't face life anymore and then a gunshot is heard. Everyone assumes it was a suicide, except for detective Dirk Gently, who knew it was a murder. How did he now? Challenge #8: What is unique about these opening paragraphs of a novel? If youth, throughout all history, had had a champion to stand up for it; to show a doubting world that a child can think; and, possibly, do it practically; you wouldn’t constantly run across folks today who claim that “a child don’t know anything.”A child’s brain starts functioning at birth; and has, amongst its many infant convolutions, thousands of dormant atoms, into which God has put a mystic possibility for noticing an adult’s act, and figuring out its purport. Up to about its primary school days a child thinks, naturally, only of play. But many a form of play contains disciplinary factors. “You can’t do this,” or “that puts you out,” shows a child that it must think, practically or fail. Now, if, throughout childhood, a brain has no opposition, it is plain that it will attain a position of “status quo,” as with our ordinary animals. Man knows not why a cow, dog or lion was not born with a brain on a par with ours; why such animals cannot add, subtract, or obtain from books and schooling, that paramount position which Man holds today. But a human brain is not in that class. Constantly throbbing and pulsating, it rapidly forms opinions; attaining an ability of its own; a fact which is startlingly shown by an occasional child “prodigy” in music or school work. And as, with our dumb animals, a child’s inability convincingly to impart its thoughts to us, should not class it as ignorant. Upon this basis I am going to show you how a bunch of bright young folks did find a champion; a man with boys and girls of his own; a man of so dominating and happy individuality that Youth is drawn to him as is a fly to a sugar bowl. It is a story about a small town. It is not a gossipy yarn; nor is it a dry, monotonous account, full of such customary “fill-ins” as “romantic moonlight casting murky shadows down a long, winding country road.” Nor will it say anything about tinklings lulling distant folds; robins carolling at twilight, nor any “warm glow of lamplight” from a cabin window. No. It is an account of up-and-doing activity; a vivid portrayal of Youth as it is today; and a practical discarding of that worn-out notion that “a child don’t know anything.” Challenge #9: A dagger thrust at my own heart Dictates the way I'm swayed Left I stand, and right I yield To the twisting of the blade. What am I? Challenge #10: The Fisherman's mystery: One day, a fisherman (real person) went out fishing. He loads and loads of fish. At one point, he pulled the line and saw a fish on the line that neither struggled nor tried to save itself at all, but the fisherman wasn't surprised, WHY? Good Luck! *Fingers crossed Airmax will have difficulty on these ones* ==;