If Monica never got fired for taking those steaks then she wouldn’t have worked at the 50’s diner. If Monica never worked at the 50’s diner then Rachel wouldn’t have meet Mark. If Rachel never met Mark she would have never worked at Bloomingdales. If Rachel never worked at Bloomingdale’s she wouldn’t have met Joshua. If she didn’t met Joshua she wouldn’t have blown off Emily. If Rachel hadn’t blown off Emily, Ross wouldn’t have dated her. If Ross never dated Emily they wouldn’t have a wedding. If Ross and Emily didn’t have a wedding Monica and Chandler wouldn’t have gotten together.
Lesson is good things can come from awful things.