Jerry Jones, the egomaniacal owner of the Dallas Cowboys, won’t accept any advice from someone who in truth doesn’t really give a crap about the organization he calls “America’s Team.”

But I’m going to offer it anyway.

A Dallas man submitted a letter to the editor of the Dallas Morning News, which published it in this morning’s paper. The fan writes that the team has gone “28 long years” since it last played for an NFL championship; the team has burned through 1,484 players, six head coaches and one general manager. “Can you guess the common denominator for all these … failures?” he writes.

Sure. That’s Jones, who doubles as GM as well as the guy who signs the ample paychecks.

Jones’s ego compels him to pretend he knows something about pro football. He won’t give up the GM post to a real football pro. But he damn sure should.

The Cowboys choked this past weekend against a team described as “upstart.” The Green Bay Packers came to play tackle football. The Cowboys didn’t. There likely should be a coaching change in the Cowboys’ immediate future.

As for the GM matter, that’s up to the owner … who must decide whether to “fire” himself and then hire someone who knows how to build and maintain a professional football team.

That won’t happen. It certainly should, if only the owner’s ego would allow it.