I have been enjoying a debate in another group about the best business idea ever, and it got me wondering what the answer would be for writers. What is the greatest invention or idea in the history of writing? The nominees could range from the humble eraser and the sticky note, to the printing press and the typewriter, all the way to spell check, the delete key and "save as." And let us not overlook coffee, the deadline and the library card. So I am putting it out there. What do you think is the best thing ever invented for writers, and why? Let me know your thoughts below. I am withholding my own vote until I see yours.