Then you haven't been paying attention.

Brady operates on repetition, repetition, repetition, repetition, repetition.
He wants you to turn on an inch marker, not a yard marker. With the correct hip position, shoulder position, arm position, foot position, speed. That's why a lot of very good receivers come to the Pats and can't hack it. He drills that stuff all summer.
If he misses you it's usually cause the receiver wasn't perfect. He throws to where they 'should' be. Not where they are.
This is why the loss of Julien was so big, because he and Brady not only put together perfect routes, he also could adlib in the exact same fashion as Brady thought. So when a route tree broke down, they could effectively run a play that wasn't even in the playbook. Brady would throw it to open space, and Edelman would 'magically' appear there.
And I'm not even saying Brady played well. He didn't play particularly well, but nobody did.
The number of times I've heard, "he's getting older, he's 37, he's 38, he's 39, etc etc etc...." and A few games later it's lights out. Happens every year. People are so pumped to make the call that "it's over", that they are wrong more often than not. He's got a few more years as a high caliber QB imo.
This was by far and away the most surprising thing of the night for me. The Pats are usually phenomenal at making adjustments. Both at the half, and throughout the game. It didn't appear they made many and I couldn't figure out why. Head scratcher.