websites – What kind of (legal, moral) service would people pay me Bitcoin for?

I’m desperately trying to make money. I barely have the energy to type this, but I need to press on. Bitcoin is the only feasible option left for me.

I’m trying to determine some kind of web service, e-mail service or some kind of database/system involving some sort of data processing by me which is valuable to others, and which would make them want to pay me Bitcoin for.

I have no idea how I’m going to be able to market it, and I don’t even know what I could possibly provide that anyone would actually want to pay for. Bitcoin people seem extraordinarily difficult to convince, probably because they are more intelligent than the general public.

Of course, there is no shortage in my head of “random ideas” which “would be fun”, but I’m way past that point now where I can afford to do things because they are “fun” or “interesting”. I need something which people want and which I can provide.

One major issue is that I’m so painfully different from people myself, so nothing that I would like myself is of any interest to others. Besides, since I’ve never had money to spend, it’s hard for me to know what others would pay for. It seems like they pay for all kinds of stupid things, but that’s likely due to the sellers’ ability to market their stuff to large numbers of not-very-smart people.

I’m not expecting you to reveal your secret trick to make money. I’m requesting reasonable ideas of reasonable services that somebody reasonably intelligent can come up with. Feel free to brainstorm, as long as you take this seriously. Because I certainly do. My future depends on coming up with something very soon.

terminology – Is there a name for this kind of mini-game? (cursor moves on a bar, press key in part of the bar to win)

Today I played a game which has a mini-game in it, basically it looks like this:

here’s a bar:

----------=====----------

and a cursor moves back and forth on it:

-|--------=====----------  ( cursor "|" moves in this direction -> )

-----|----=====----------

----------===|=----------

----------=====---------|  ( when the cursor reaches the end, it goes back <-)

If I hit a key when the cursor is on the specific part of the bar (which I used the “=” sign to represent), I win. Otherwise I lose.

This kind of mini-game is pretty common as I’ve seen many variant of it in a lot of games, yet I don’t know the name of it. Does it have a name? What’s the origin of it?

dnd 5e – What kind of license or ownership does uploading content to D&D Beyond grant WOTC?

Since the sale of D&D Beyond by Twitch to Fandom.com, the licensing situation has changed (or more accurately, been added to).

The original Twitch/WotC license situation is detailed below (spoilers: it’s slipshod and accidentally overreaches in an alarming way), but Fandom’s licensing situation is much simpler:

Everything put up on D&D Beyond is covered by Fandom’s general license, making uploaded content licensed under Creative Commons Attribution Share-Alike 3.0. That means that anyone (WotC included) can freely use anything uploaded to D&D Beyond, including in commercial and derivative works, so long as they 1) give due attribution to the creator, 2) allow the same freely-reusable license for whatever derivative work they create directly based on the user-created content taken from D&D Beyond.

Basically, WotC could put your class, monster, or whatever in one of their books, but they’d have to treat it similar to OGL material and give credit and relicense it to the reader to use in the same way.

That’s not a bad license. It’s basically open-sourcing any contributions. It means you don’t control the content anymore in terms of restricting what others can do with it, and others can use or remix what you upload to D&D Beyond so long as they credit you.

(Although you can’t restrict what others do with CC licensed content, you still hold the copyright on it and are never yourself restricted by the CC license as to what you can do with your own copyrighted material.)

The wrinkle is that the original Twitch/WotC license also still exists for anything that was uploaded before the sale in December 2018. The sale of D&D Beyond to Fandom doesn’t extinguish the license that Twitch had to that content, since it was an unrevocable, in perpetuity license (see below). Although Twitch may have signed a contract that assigned their licenses entirely to Fandom, we don’t know the conditions of the sale, so it has to be assumed that Twitch still holds that content under that terrible license. On the plus side, Twitch could only have a vanishingly small interest in exercising that license even if they do still hold it, so it’s not practically meaningful.

So TL;DR, user-created content uploaded to D&D Beyond after Fandom bought it is open-sourced, the same way as content submitted to Wikipedia or to RPG.se is open-sourced.


For the historical outrage, read on to the terrible, terrible license that Twitch originally had on D&D Beyond uploaded content.

This section written October 2017. Any present-tense should be interpreted as referring to that time.

Presuming that D&D Beyond qualifies1 as a “Twitch Service” under the Twitch TOS, then this is the controlling license text from §8(a)(i) (“User Content”, “License to Twitch”):

Unless otherwise agreed to (…), if you submit, transmit, display, perform, post or store User Content using the Twitch Services, you grant Twitch and its sublicensees an unrestricted, worldwide, perpetual, irrevocable, fully sub-licenseable, nonexclusive, and royalty-free right to (a) use, reproduce, modify, adapt, publish, translate, create derivative works from, distribute, perform and display such User Content (including without limitation for promoting and redistributing part or all of the Twitch Services (and derivative works thereof)) in any form, format, media or media channels now known or later developed or discovered; and (b) use the name, identity, likeness and voice (or other biographical information) that you submit in connection with such User Content.

So far, so good: D&D Beyond has a license for the user submitted content. They’re just relying on their blanket license, rather than making a D&D Beyond–specific one or adding D&D Beyond–specific provisions to it.

Notably, to address the odd mismatch with what the question naturally expected, this license doesn’t involve users granting anything at all to WotC.

This is not a good license for D&D Beyond though

There are some issues with this license, when taken as a whole.

I’m not a lawyer (IANAL), but I study intellectual property as an amateur, and my understanding is that this license’s highlights are

  • You grant an unlimited, permanent license to Twitch to use any content you submit. (S’cool.)

  • Twitch does not own the IP, you do. (Also fine.)

  • Twitch has no say over what you do with the same material elsewhere (that’s the “non-exclusive” part). (Excellent.)

  • But Twitch can do anything it wants with it.

    This includes reasonable things like

    • Displaying it on their site (which is what you want them to do)
    • Modifying it as needed for computers to be able to handle and transmit it (also important for the service to do what you signed up for)

    … and un-reasonable things like

    • Resell it unmodified (ehhh…)
    • Relicense it to anyone under any terms Twitch wants (um…)
    • Create derivative works that Twitch can do anything with as if they held the copyright
      (🚨 AUGH NO 🚨)
    • Use specific personal info you’ve submitted to them (and hence any fame attached to you) to advertise your content and any derivation they make of it, as if you are personally endorsing the ad (half okay, half bleh.)

This is an incredibly wide-reaching, alarmingly bad license for users, unfortunately. I don’t think WotC’s PR department would be happy with it, if the full implications became the subject of a loud public discussion, as it doesn’t seem to meet the standards for their community relationship that WotC has established with the DMs Guild licensing.

That said, these provisions are pretty typical in the wild, for a media company whose lawyers were allowed to go into full “covering our butts” mode without any corporate oversight for the PR implications, and precedent for actually using those unreasonable provisions (apart from the promotional one for the original content) is really slight, so there’s near-zero reason to take it as intent to do unreasonable things with user content.

The most they’re likely to do is to do the normal uploading and displaying stuff, and maybe using some of the best in an ad or something with the creator’s name and face attached. If Twitch ever gets acquired or folds, the content and full-permission license gets transferred to the new owners, if any.

The problem is four little words

Specifically, the poisonous part of that license is the four little words “create derivative works from” in §8(a)(i)(a). All those other things (modify, adapt, translate, etc.) are necessary to make sure they can adjust the content so that it’s in a format that they can then serve on their website or whatever service — the whole point of the exercise. That’s fine and necessary in any license regarding user content on a service that’s designed to display and distribute user content. All the other provisions, by themselves, would just mean that they can display your material without meaningfully altering it for the life of Twitch or its inheritors, which is mostly what a user expects and wants when signing up.

But a derivative work is a whole other kettle of fish and breaks the license wide open. A derivative work is a copyright concept where someone makes changes to something to create something new, even though it’s obviously based on the original. Copyright says that the original creator still owns the copyright on (and therefore, normally, controls) any derivative works that anyone else makes — which is why people can’t just, for example, publish a Star Wars novel whenever they feel like it. But this license defangs that part of copyright entirely, and with it, pretty much anything copyright is supposed to accomplish.

The trouble is that along with the rest of the license, that effectively means that Twitch has forever-permission to do absolutely anything they want with your material, zeroing out every right and control you have under copyright when it comes to Twitch or anyone else they choose. Effectively you still have the copyright, but it’s meaningless because you’ve licensed all control over it forever, to anyone Twitch (or its inheritors) chooses. They could take the best submitted homebrew and publish it as a hardcover D&D supplement and keep all the credit and money. They could take all the homebrew and give it to another company who then chooses some, tweaks it, and makes a new Pathfinder setting product with it. Sixty years from now Twitch could be acquired by a Virtual World service and use your homebrew to make some kind of VR RPG unrelated to D&D’s branding. They could take the “Druid McAwesome” class made by some Jason Jones guy and republish it as “Druid: Jason Jones Smells And Is A Stoopidhead Edition”. Anything.

This is all really, really unlikely, but forever is a long time. So that’s a thing.


  1. It seems to (§1¶1):

    Welcome to the services operated by Twitch Interactive, Inc. (with its affiliates, “ Twitch ”) consisting of the website available at http://www.twitch.tv, and its network of websites, software applications, or any other products or services offered by Twitch (the “ Twitch Services ”).

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g suite – Gmail – Receive a notification of some kind when an email goes into the spam folder

One of our business activities has a customer support email address that is supplied by Google Suite (gmail with a custom domain).

This email address is hooked into a customer service platform that consumes emails and generates tickets.

The issue is that if Gmail’s spam system moves the email to the spam folder, then the email is not forward to the customer service platform.

Perhaps 1 out of 10 such emails that go to the spam folder are from a legitimate customer, and our customer service platform is blind to it.

Is there any way (even if I have to jump through a lot of hoops) to receive some kind of notification (SMS, email, anything) when an email is deposited in the spam folder of a particular gmail account?

Thanks!

How to solve this kind of differential equation directly?

Given $f^{prime}left(e^{x}right)=x e^{-x}$, $f(1)=0$, I want to find the expression of $f(x)$ (the answer is $f(x)=frac{1}{2}(ln x)^{2}$):

DSolve({f'(E^x) == x*E^-x, f(1) == 0}, f(x), x)

But the above code cannot solve this problem, I wonder if we can solve this kind of differential equation directly.

Other examples for testing:

The answer to the example $f^{prime}(cos x+2)=sin ^{2} x+tan ^{2} x$ is $f(x)=-frac{1}{x-2}-frac{1}{3}(x-2)^{3}+C$.

DSolve(f'(Cos(x) + 2) == Sin(x)^2 + Tan(x)^2, f(x), x)

film – What kind of photography is this?

Digging through a file of (very) old family photos, I found a couple of photos like this:

enter image description here

The thing is about 10cm (4 inches) height, and it looks like a film glued to a fairly thick cardboard.

This is pretty ancient, from the notes by my grandma on the back it could be her own grandma (so the thing would be done around 1880).

Is this a photo (Daguerreotype, other?) or something else?

lambda calculus – Constructing a monad via type synonyms of a particular kind

We can define a reader/environment monad on the simply-typed lambda calculus, using the following three equations, where $r$ is some fixed type, $alpha$ is any type (I subscript some terms with their types), $mathbb{M}$ is the proposed monadic type modality), $eta$ is the unit of the monad and $mu:mathbb{M} mathbb{M}alpha → mathbb{M}alpha$ is the join of the monad:

$$mathbb{M} thinspace α = r → α hspace{1cm} ∀α$$
$$ eta , a_{alpha} = lambda c_{r}.; a hspace{2cm} ∀a_{alpha}$$
$$mu,b_{mathbb{M}mathbb{M} alpha} = λc_{r}.; b_{mathbb{M}mathbb{M}alpha}, c, c hspace{1cm} ∀b_{mathbb{M}mathbb{M} alpha} $$

Can we always construct a reader monad by type synonyms of the form $r = x$, for arbitrary function types $x$ (for example, where $x$ is $(beta to t) to t$), for some type $beta$?

Domain Driven Design – where should I put this kind of struct?

for example:

type AParams struct {
   a int
   b string
   c ()anotherStruct
   ...
}
//domain/repo/a_repo.go
type ARepo interface {
    GetA(params Aparams, ...) (entity.A, error)
}
/// infra/repo/a_repo.go
//the implementation of ARepo interface goes here
...

My question is which layer should I put AParams struct to? And what is it called in DDD? Thanks.

In my opinion, it can be in infra layer coz the domain layer can call it in A repository interface