David vs. Goliath

When and why David can win. None of this is news to me. I've always held that you never, ever fight your opponent's fight on his turf by his rules if you have any alternative available. Never attack his strengths if you can attack his weaknesses. Redneck said it: "Take a stick to a fistfight. Take a knife to a stick fight. Take a gun to a knife fight. Stay out of a gunfight.". Old Shin'a'in proverb: "If you find yourself in a fair fight, you've obviously screwed up your planning. Learn from this, and avoid making that mistake again.". All of them are making the same point. And it's a good one to keep in mind. Your opponent isn't going to just hand you any advantage, why should you hand him one?