with a sword in the other hand...
I don't think any other team has such a hard time getting their receivers open...and it's certainly not because our receivers are old and slow...so that excuse they used a few years back doesn't work anymore.
It has got to be play design and using the best attributes of each and every skill player to succeed.
If they don't know what routes and formations to get them open, simply watch the endless hours of footage they have of the Steelers, Broncos, and Patriots receivers...and learn something.
That was the most tension I've seen between them, and it wasn't much. I'm sure they have some, but Harbaugh is generally not a guy, during a game, to get into it with any players. The lone exception I can remember is Ellerbe in a preseason game against the Rams, he made a pick 6, and did some dumb fall into the endzone type celebration. Harbaugh RAN down the sideline, beckoned him over, and GRABBED him by the pads, chewing him out. It was deserved though, considering it was a dumb move in a preseason game which we were losing pretty handily.