You have to first quantify whether or not the deletions make the information that is there more or less accurate. That's not an easy issue to decipher, as is ev

You have to first quantify whether or not the deletions make the information that is there more or less accurate. That's not an easy issue to decipher, as is evidenced. There's also the fact that we, as humans have a finite amount of knowledge and it appears likely that much of the low-hanging fruit has been picked in the sense that all the 'easy' articles have been written.