Watchlords

I've seen some posts on Wine Talk debating the merits of traditional vs. modern wine making techniques. Can someone explain the difference? In other words, what were wine makers doing 30+ years ago that they aren't doing today?

Are wine makers today taking advantage of technological advancements that weren't available previously? If so, what are they? Are grapes being grown differently today? If so, how? Lastly, why would wine makers change their process for making wine in the first place? So they can get a better Parker rating?

I fully appreciate that different wine regions make wine differently. If someone wants to provide an answer using a specific wine region, I'm OK with that.