In 1899, then Patent Commissioner, Charles H. Duell is infamously reported to have said, "everything that can be invented has been invented."
Eighteen, Ninety-Nine. Pre transitors, radio, television, computers, world wars, manned space exploration ...pretty much the entirety of the modern world we take for granted.
I have covered this. Sit in front of a brick wall. count three bricks up, five bricks across -- then write about that one brick.
You won't have that problem. It's nonsense. Everyone uttering something similar is constantly being interrupted by someone finding a new wrinkle, a different perspective, a missed insight on the very subject.
I just castigated a web dev guy for posting a lengthy list and commentary of tutorials on CSS message boxes for form construction -- that had not one thing about Writing Effective Message For Users. That was not a case of everything being written -- it's a case of user blindness endemic to web development.
Only in web dev land can one be befuddled that you can cite ten articles about the box around the message, each and every one with dummy text instead of a message, and not one article about likely user problems, or helpful messages (dare I suggest a variety of versions tested with users) that goes into the box.
The story there was an extreme focus on technology to the exclusion of the purpose for technology. Or, wherever there's a crowd writing all about the Emperor's New Clothes in minute detail, you're missing a very interesting contrary story angle.