Adequate evidence given to support assertions. Reader can rely on the accuracy of references when seeking out additional material. Logic of arguments not made clear through writing. Writing is not strong enough to make train of thought easily understood, but reader can figure out what writer probably intends. Paper is well written, logical, organized.
Reader can follow line of reasoning.
Enough mechanical errors are present to be distracting to the reader. The number of mechanical errors present is within tolerable limits. Writing is free or almost free of mechanical errors. Reader learns little from the paper or acquires misinformation. Paper is written for the intended audience.