One of the worst-kept inside jokes around the NFL is Tom Brady’s weekly appearance on the Patriots’ injury report. For what seems like forever, he has appeared on the report with a mysterious shoulder ailment, which has caused many eyes to roll.

The way things are going this season for the Patriots, they might have to tweak the ‘ol injury report. Don’t be surprised if you check your local newspaper’s agate page one day soon and see something like this:

QB Tom Brady, right-arm fatigue, probable.

Brady is throwing like a one-armed bandit, leading one of the most prolific passing attacks in NFL history. The Patriots are 6-0, and Brady already has attempted 204 passes, including an NFL-best 21 touchdown passes. In Sunday’s 48-27 victory over the previously undefeated Cowboys, Tom Terrific became the first quarterback in history to throw at least three scores in each of his first six games.

He’s scary good, but it raises a question: Can the Patriots continue to blow away the competition with such a one-dimensional offense?

History says no. Sooner or later, it has to bite them, right? Every football tenet indicates that a team requires some semblance of balance to win a championship. I mean, you can expect to do the same thing over and over, and get away with it.

Remember Air Coryell? In 1980 and 1981, Dan Fouts passed for 4,715 and 4,802 yards, respectively, but those high-flying Chargers teams never made the Super Bowl.

Remember Dan Marino’s heyday? He was a passing machine for the Dolphins in the mid-1980s, throwing for 48 touchdowns in 1984, but what did it get him? He got rich, even got a street named after him in Miami, but he has as many Super Bowl rings as me.

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Yes, the old 49ers, from the Bill Walsh and Joe Montana vintage, were a pass-first team. But they had a fellow by the name of Roger Craig in the backfield to keep defenses somewhat honest.

You can’t be a one-trick pony in the NFL. Yes, Brady is having one of those amazing years — he’s on a 4,700-yard, 56-touchdown pace — but it’ll come crashing down eventually. And by that, I don’t mean a prolonged losing streak. But they won’t go undefeated, write that down.

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Obviously, coach Bill Belichick doesn’t want to play this way. If he had his druthers, he’d love to run it 40 times a game and ram it down the opponents’ throat (like early in the season when running backs Sammy Morris and Laurence Maroney were 100% healthy). But what makes him such a good coach is his ability to adapt to his personnel.

With Morris and Maroney banged up, the strength of the Patriots rests on Brady (duh!) and the rebuilt receiving corps. So he’s going to let ‘er rip, especially if the matchups dictate an emphasis on the passing attack. And that certainly was the case against the Cowboys.

Facing a thin and banged up secondary, the Patriots used spread formations throughout the game, creating favorable matchups all day. The Cowboys simply didn’t have enough defensive backs to cover the Patriots’ posse of receivers.

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You want to double Randy Moss (six catches for 59 yards and a TD)?

Fine, no problem. They’ll throw to Dante Stallworth (seven catches for 136 yards and a TD).

You want to double Stallworth? Go right ahead. They’ll throw to the slot receiver, Wes Welker (11 catches for 124 yards and two TDs).

If Brady gets bored with those choices, he can throw to tight end Kyle Brady (one TD catch) just for kicks.

Brady finished with a career-high five touchdown passes, as the Patriots rolled to their highest point total since a 50-point outburst against the Colts in 1984.