Someone who communicates effectively is definitely paying attention to sentence structure. One's writing can be regarded as a manifestation of one's model of t

Someone who communicates effectively is definitely paying attention to sentence structure. One's writing can be regarded as a manifestation of one's model of the world. Writing riddled with grammatical errors, incorrect sentence structures and incomplete punctuation indicate an overly simplistic model. A more detailed model yields more predictive power, at the expense of extra brain cycles. If one cannot differentiate between "your" and "you're" I'm pretty sure that person is running a slower "CPU".