When Jack walked into his sociology class, he noticed there was a buzz of excitement among the other students in the room.

As he walked up towards his seat, he overheard a conversation that might explain the excitement.

"Did you get your free Radius account?"

"What free account?"

"Dude, do you ever read the e-mails from the school? Radius is offering free student accounts, and NSU sent out a link we can use to register."

"Seriously. Damn, I need to go check my e-mail."

As he sat next to Robin, Professor Broadmoor entered the room, and as she marched towards her podium, the room grew quiet.

"As some of you may have noticed, Radius 10K is offering free student accounts, and NSU has agreed to participate in that program. What you may not know is that these free accounts have some restrictions."

Several students groaned quietly.

"The code review and paper review services remain unchanged. However, the chat service is restricted to only answering factual questions. It will not write your paper for you, and it will not do your math homework."

More students groaned.

"However, they added a guided paper writing service as well as math and science tutoring services. I tried the guided paper-writing service and found it acceptable. Any paper you write using this new service will be accepted by me as long as you only used this service and nothing else."

"What?"

"Seriously?!"

"Wow!"

Murmurs of surprise flowed through the room at Professor Broadmoor's announcement. Up until that point, she had been adamant that she would not accept any paper that had been written or edited by an AI. And several students had discovered the hard way just how serious she was about her AI ban.

"Besides the student accounts, Radius is also providing a paper grading service to teachers, and NSU has asked me to trial this service. I will not be blindly trusting this service and will continue to personally read and grade each and every one of your papers. So if you don't like your grade, don't bother trying to blame the AI."

Jack and Robin exchanged knowing looks before returning their attention to the front of the class.

——————————

Jack was walking across the quad when his phone dinged. It happened often enough that whenever he crossed the quad and didn't receive a text or phone call, he'd check to make sure his phone was on and had a signal.

He checked and found Madison had sent him another video link. One from the same tech influencer as last time. He clicked the link.

"Hello everyone. As some of you may know, Radius 10K announced that they will be providing free student accounts to students at any school that chooses to participate. What many of you may not know is that they also published a new open-source model and accompanying service."

"There are a number of services that will tell you what percentage of a document is likely to have been AI-generated. These services were notoriously inaccurate, as many students will attest, and have only made some improvements."

"And of particular interest is that none of these services will tell you which AI model generated the content. Until now. Radius 10K's new service will not only tell you what percentage of the content is AI generated, it will tell you if any of the content submitted was generated by one of their models."

A bar chart appeared on the screen.

"I have a private benchmark I created to test these services and ran it against the new Radius service to see how it would perform. And as you can see, the Radius service false negative rate is only 18 percent, the lowest of all the services I've tested so far."

"But even more impressive is that their false positive rate appears to be zero. This bodes well for any students who have been burned in the past by less than accurate AI checkers."

"Now, while I was reviewing the Radius 10K website, I stumbled upon a small addition to one of their technical documents. It stated that they watermark all generated content in a way that doesn't alter or degrade the semantic content."

"Curious, I searched their website and found a page that provided more detail. Not only do they watermark their generated content, they claim the watermark is viral and that any other AI model trained using their watermarked content may also generate watermarked content!"

The young man said the last bit with a tone of astonishment.

"They provide a paper that explains the technical details of how they add the watermark and provides links to open-source code and a trained model that can be used to check for the presence of this watermark in content."

The young man leaned in towards the camera and said, "When I read this, I was reminded of the interview on Business Today that featured Heidy Oakland, CEO of Radius, and Hammond Saltzman, CEO of AI-n-stein."

"Here, let me play the relevant clip." A box appeared on screen, and a clip of the interview played.

"So tell us, Mr. Saltzman," said Renee, the show host, "what are some ways a new company might train a new model quickly without incurring the costs a company such as your own has had to pay to reach your current success?"

"That's an interesting question, Renee," said Mr. Saltzman. "One example is a problem that came up recently. We discovered that a competitor of ours, who shall remain nameless for now, was making use of our service to train their models."

"How does that work?" asked Renee.

"We hired many experts to solve problems so that our models could be trained on the solutions. Our nameless competitor was instead using our service to solve the problems, saving them the cost and time of hiring experts."

"Do you think other competitors might be doing the same thing?" asked Renee, leadingly.

"We are certain of it," declared Mr. Saltzman. "But identifying the offending accounts has been challenging."

The clip ended, and the young man tapped a finger on his chin while saying with a pensive look, "I wonder... is it possible that Mr. Saltzman was engaging in a bit of the pot calling the kettle black?"

The young man stared at the screen for a moment, then smiled.

"So, being the inquisitive person I am, I wrote ten prompts and fed them to both version 4 and version 5 of AI-n-stein's BBnB model. Then I fed the output of each to Radius's new service. The results will surprise you. Or maybe they won't But first, a word about our sponsor for today's video."

Jack skipped past the sponsored content.

"Okay, back to our main question. Did AI-n-stein train their new model using Radium? I cannot say. But what I can say is that Radius's new service flagged none of the BBnB version 4 content as being derived from Radium, but flagged all of the BBnB version 5 content as being derived from Radium."

"I don't understand the math well enough to properly assess the validity of Radius's new watermarking technique, but the results do not look good for AI-n-stein. If you are an expert in the field and are willing to help me understand this paper, please contact me."

Jack closed the video and resumed his walk across the quad. He wondered how AI-n-stein would try to spin this.

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