 Even if you had a video of you creating the invention with documented evidence of having created it first, that's not going to help you in court if somebody else follows the application first. So no more writing a sketch and mailing a letter? Yeah. I still have clients today that say, well, I mailed myself a letter. You can't do that anymore. Right? It used to be proof, you know? Yeah. That would prove your date, of what date you had your concept.