I must say, I find this “episode” of the Language Log uniquely satisfying. Partially because I too have fallen prey to the odd grammatical error, now and again. But mostly because it serves as a humbling reminder that we all fail, and thus, as we point out each other’s failings, we all contribute.
but perhaps I read too much into this.
The last sentence though, remains priceless. Sure, pick on the word “decider.” Anyone want to guess what the other “obvious” error is?