The visit to Renée lasts two weeks. They see tourist attractions and movies and are shown off to Renée's friends. Then Isabella and Lalita shuttle back up to the spacedock, board the fully supplied Prometheus, and hie off to a system (inhabited, but with stone-age people who wouldn't know what to make of a warp equation, alas).

Then they check out a black hole, and then they are off to their next recipient of largesse.

"Oh, this is easy," laughs Bella when the computer summarizes the state of scientific exchange on the planet.

Lalita giggles.

"No plagiarism," he says. "In a slightly different way. Okay, let's find the right semi-anonymous network to post this to."

He fusses with the language. He dives into some literature.

About half an hour later, he announces that he's come up with a clever pun on a line from a play that was widely quoted several years ago but has fallen out of the public sphere since.

"Lovely. And I have found a place to put it."

Putting the plans online rather than on paper means doing a lot of cutting-and-pasting, since their systems can't actually type these letters, but eventually the thing is done, the name is registered via elaborate proxy that pretends to terminate at a broken server, and the equations are posted.

(They get to watch reactions in real time: "Whoa, this is revolutionary!" "It'll never work in practice." "Where would you get enough material with the necessary properties?" "This is the most elegant equation set I've ever seen.")

And off they go! They "were never here".

"Of course."

Celebration!