This is an era of big change in major league baseball, and if all the things under discussion between the owners and union come to pass, there will be a lot more change than the current influence of statistical analysis on decisions. But this is outright calm compared to the era from 1965 to 1976.
Then, as now, it was a time of national turbulence — Vietnam, civil rights, Watergate, and much more — and then, as now, the national pastime was having turbulence of its own. The period began with a major move meant to keep the richest teams — well, okay, the New York Yankees — from overwhelming everyone else, and ended with a major move that put the richest teams right back in control.