You are not understanding my sentence. I said that my brain was filtering the grammar errors for me. Your statement is correct but the brain IS filtering stuff for you, all the time. Every sensory signal is filtered through your subconscious mind before it reaches your conscious mind. Saying that the brain filters grammar errors is a completely correct statement, I’m really not getting why you are saying that you can’t filter stuff by not filtering them, it’s a correct statement but it just doesn’t apply. Your written tone is very condescending for someone that is missing the original point, come on.