For Jack Welch, it was just another one of those days. A round of meetings at Farfield headquaters in the morning. Back to his office to prepare the charts he would use for his lecture at Crotonville that afternoon. A private lunch in his small dining room off his office with the author and his VP for public relations, Beth Comstock. It is widely watched, of course, because it will mean the end of the Jack Welch era and what an era it has been. He has been around for so long as chairman and CEO of General Electric nearly 20 years that his concepts and strategies become ingrained in the country business fabric.