I agree with Rich.
Cart paths, my reason because seem to be spreading over our courses like a cancer.
But in answer to your question, its must be the pen. The lack of true and accurate descriptions of course design & its historical implications can become the greatest of evils, if based upon poor research. This perhaps has done more harm to golf architecture, based hopefully only out of ignorance. Only on solid building block or solid foundations can we all move forward, anything else just rots the core and weakens our sport.
Admitting I got it wrong or made a mistake has no fear for me. I will happily accept it once confronted with the true facts. To be wrong from time to time is no admission of failure, its just life, but what is important in an age when we can’t trust our own politicians (if ever we did) is that our history is true.
The Pen is mightier than the Driver, writer and reader beware.