A brushback pitch in baseball is a pitch that is thrown closer to the batter's body than is considered safe, strictly speaking, and aims to push the batter back if they crowd the home plate too much.
Any scientific conference produces a lot of paperwork. Mountains and rivers of it, in fact.
If you are an author, you have not only to do research and write the paper, but also submit your results for perusal to your organization's security department and obtain two writs from them: one, that your text does not contain information constituting State secret, and two, permission to publish the material. You and all your co-authors then have to sign a publishing copyright agreement and present the originals of all three documents to the conference's Organizing Committee, for digital copies are not considered legal. You may, however, and should, send your paper in by email.
If you are a conference organizer, and collect publishing fees for the papers, you have to issue three documents in two copies each for every fee you collect: one, the acceptance act (for services rendered), two and three, advance and final invoices.
Then, at the conference, each author who has payed for publication has to sign these six documents for every paper they have published.
Authors come, authors go. Authors live at the conference venue, authors only arrive to present their papers. Authors do not care to be pulled away from business to sign papers. Alas for their wants, and alas for yours, oh organizer running around with stacks of papers in your arms. You need these signed documents for your accounts even if the authors do not need their copies for theirs.
If you are the head of the Organizing Committee, or the accountant of the host party, on top of all of your other obligations and troubles (mostly caused by authors running amok and ignoring instructions) you have to sign paperwork.
Let's do the maths for the annual Zvenigorod Conference on Plasma Physics and Controlled Fusion for which I have been a member of the Organizing Committee for the last five years. 250 papers times 3 times 2 equals 1500. One thousand five hundred pages, three packs of printing paper.
Summing up, paperwork can be varied, frustrating, mind-numbing and mind-boggling and as obligatory as it is illogical.
Over the years, I have been both impressed and humbled by my chief who is also the Organizing Committee's head, and his attitude toward signing these mountains of paperwork. He comes to the Committee's quarters (always a luxury suite at the conference hotel), he says hellos all around, he sits at the table and he signs paper after paper after paper, all the while chatting amiably with others, watching some TV and unobtrusively paying attention to his gargantuan task. He also never allows his signature to slip despite those countless tiresome repetitions.
Sometimes this cold-fish tireless attitude is the best way to overcome the mindless challenges life throws your way. Taking emotional responses like "this makes no sense", "why would anyone require this kind of work or information", "what drivel", "tired", "I don't want to do this and have to force myself to" out of the equation lets you conserve the energy and to leave the unpleasant task behind faster and with less emotional friction.
Note. I am not familiar with the titles of the above mentioned documents in English and dictionaries only get you so far. If they sound particularly odd, I have probably mistranslated them.