Clearly, Aaron Rogers wasn't ready to play as a rookie. And they had an aging, but good, QB in Favre.
But a couple of years learning the system, understanding the game, countless practices, and he became a star.

Clearly, Goff is not ready to play as a rookie. Could he if he had to? Sure. But they'd have to cut the playbook down and run only the plays that they felt comfortable with him running.

That he cost several draft picks to get is ONLY because where the Rams were sitting on draft day. Had Tennessee or the Browns drafted him, he would have cost only one draft pick. And while there still would have been pressure to start him immediately, it is less than because the Rams had to give up a big package to move up.....no way Goff would have been available at where the Rams were sitting because QBs are just too valuable.

Goff has shown us the physical tools of exceptional QBs.
He has shown us a steady, workmanlike demeanor.
He needs more time. That hardly qualifies as a mistake.

The other part of the circumstance is that Goff has one of the worst group of WRs in the league to toss the ball to. This makes it even tougher for a rookie. When you are Jameis Winston and you come in throwing to 2 All-Pro caliber WRs, it is a HUGE help.

I realize that we can differ on this.
But in the end, Fisher has made it abundantly clear that he is NOT going to throw Goff to the wolves, at least partly because he doesn't have to. He has a competent QB to handle things anywhere from a few games to the entire season. But he also made it clear that Goff is the Rams QB of the future as soon as he's ready and just money and game politics won't allow that to go longer than OTAs in 2017. Keenum knows that; and he knows he'll be auditioning for a good paying job with another team so he has motivation to give it his all. And he's wise enough to know that this is a good thing, not something to hang his head about.