She wonders if it might be possible to have a computer catalog some things then, and retain the catalog upon return.

If the person who remembers attempts to tell other people of what the previous state of affairs was, how do they tend to react?

"Possibly, to the first. And to the second - generally like how you'd expect people to react if you started insisting the world had been rewritten at some point in the past? There's not some magically enforced masquerade, it's just far-fetched and sounds like a quack theory."

What she'd expect is actually somewhat different than what her interlocutor is pointing at, but she can figure out what the latter is. "And if they're aware of deletion as a phenomenon?"

"They can get details about the deleted world from you, yeah."

"I've been curious about neur-potential functioning with respect to your world; I don't suppose you have a computer or other device you wouldn't mind if I conducted a test on? And if not, if I conducted a test using mine, with you as an information source?"

"I have a tablet computer you can use."

"Thank you. I've started some experiments," she gestures at her table, "but the Bar doesn't sell magical items, and it might not be the same if someone brought it in personally. And of course I didn't have anyone to consult with." Would the other be willing to provide a brief introduction to the tablet? 

"Tablet's not magical, but, sure."

She provides an explanation of how to use the tablet, though she doesn't know how it works. It's fairly simple as far as computers go (in her opinion), since she mostly just uses it for reading and sketching. It's a touch screen, though a stylus also works.

"But it's possible it may have been affected by magic, or somehow influenced by its background presence."

She is thanked.

If the tablet has some program that can be used to enter text and then display it, she'll use that one; otherwise an empty sketching page will do. Then - she would like this tablet to tell her how many fingers she has (a simple test, to begin with). (There's considerably more to the process than issuing the command; she goes about the process. This will look, externally, like her spending an amount of time concentrating and not doing anything.)

That works.

"At least a basic test works as I would expect," she lets the other know. "I could attempt some more elaborate testing, or I could attempt a test at using information sourced from your world, if you're willing?"

"I am."

"Thank you.

If it doesn't work I won't be able to be sure for the moment whether it's affected by the forgetting or something more general, but it won't be uninformative completely. Though less informative than if it does." And she would like the tablet to tell her how many fingers her interlocutor has.

It has no idea she has an interlocutor and is really confused by this question.

Interesting. She relays this as well. 

She'd like to try the same thing on a tablet from her world to narrow down the variables involved, if her interlocutor doesn't mind?

"I don't."

She heads over to Bar, returns with a purchased fresh tablet of the sort local to her. (She'd prefer to source one from her world more clearly, but that being unavailable this seems the best of options). 

Same question.

It's similarly confused.

That is unexpected. She isn't having any such trouble, hasn't needed the reminder she set. 

Does her interlocutor have any hypothesis? Also, would it be dangerous to repeat the test with the tablet that she carried in originally, to test the case the buying from Bar was the relevant variable?

"Dunno. Usually neither people nor machines notice I'm there. Does Milliways alter effects that impact people a lot?"

Interesting question. She'll ask it. 

You're generally not allowed to attack other people in the main room, and sometimes constant active but potentially hostile effects do get suppressed.

That sounds like a possible explanation, then. Is it possible to temporarily unsuppress them?

Bar is unsure, and wouldn't know how besides.

Hm. She isn't certain how to pursue this line of inquiry further, for all that she is very much interested in doing so.

She relays the response.

"The next obvious test would be to see what might happen if I step into your world, but I think that's overmuch risk as long as I don't have my door yet." She's still uncertain about testing with her original tablet. Does her interlocutor think there would be side-effects on it if she were to attempt this?