      Second is the networking and hardware configuration that these brokershave built. Fault tolerance and system redundancy is of paramountimportance. Almost every day, I hear about a broker that has "gone down"for minutes or hours. We are not in the "Star Trek" era yet. Today'scomputers are subject to failure. (Even if we were in the Star Trek era,the Starship Enterprise experiences computer-related problems on virtuallyevery journey.) The truth is that nothing in this world is perfect. Systemsfail, tractors do dig through communications lines, satellites do getknocked out of alignment, and trees do fall on power lines from time totime. Therefore, the only way to build a "bomb proof system is toincorporate redundancy throughout the system.