To anticipate is to guess. When training for the street, your paradigm must shift. When your life or the lives of your family may be on the line, you can't afford to be wrong. On the street, it's not sparring, it's not a game, you won't know your opponent(s) abilities, strategies, nor full intentions. You may be seriously outmatched by size, strength, age. There may be multiple attackers. They may have weapons. You don't care about looking fast. You simply need to stop the attack quickly while minimizing damage to yourself and loved ones. How to be fast when you are slow may be life or death. When one believes they are good enough to use reaction rather than action, then one is violating a basic Sun Tzu principle of never underestimating one's opponent. Why choose to start at a disadvantage? If the fight is inevitable and unavoidable, strike first and don't stop striking. Action is always faster than reaction.