The difference between an art and a science is measurements, but the ability to quantify something as complex and subtle as "pitch framing" doesn't sound like it has crossed the line into science. For one thing, we're talking about the perceptions of umpires regarding the behavior of catchers, a combination whose variables themselves vary from one instance to another. Even so, clearly there is something going on. If a catcher stabs his glove away from the strike zone to catch every pitch, his "pitch framing" will probably be awful no matter the umpire. A slightly better technique is to position the glove outside the zone and move it inwards. Then there's the trick of freezing the glove after the catch, having moved it slightly in towards the zone. Then there are other, more subtle tricks, like positioning your body a certain way, knowing the ump looks a certain way over your shoulder, to make certain pitches seem more centered in the zone. Or really obvious tricks like saying, "Wow, that was a great pitch," after a close one. You can seen catchers lobbying in this way, sometimes pointing a finger at the pitcher to say "great pitch," sometimes freezing the glove, etc. Maybe what the Twins need is a catcher that's also a used car salesman. You want a polite, chatty, optimistic, enthusiastic guy that's certain his pitcher has great stuff today, and by the way ump, you're looking particularly good, too!