robryk @robryk@qoto.org

@mcc @johncarlosbaez @akkana

YMMV, but I never found it hard to get supplements of B12 only in Poland or Switzerland (I mostly eat vegan, so I need to take them, eat things fortified with B12, or both), but had to specifically ask (and specifically ask for a nontiny dose).

@cloudthethings @_thegeoff

Also, the aged username and password part and the not-so-aged port part.

TIL that work hardening during machining may have nothing to do with increased temperature (at least according to implications of wikipedia).

Offered without comment: https://mathoverflow.net/questions/38856/jokes-in-the-sense-of-littlewood-examples

@_thegeoff @mcc

Ah, right, I confused the direction of electronegativity (I think; you chelate lots of other metals using sodium or potassium salts after all).

Ok, so this should be making the solution basic, so could be easy to disprove.

@_thegeoff @mcc

But what would happen with the sodium?

@_thegeoff @mcc

I remember getting something I believed to be water soluble (maybe I was very silly and was fooled by a very fine suspension?) by leaving a nail in a jar of brine on a radiator for a week. I guess I'll need to reproduce that and make sure (a) I remember everything correctly (b) it's actually a solution.

@_thegeoff @mcc

Hm, I must be wrong. Sodium is much more electronegative than iron, so it's extremely unlikely anything like that would happen (based on my directional intuitions only; I'm very bad at chemistry).

So what the heck is that soluble thing that you get when rusting iron in saltwater?

@_thegeoff @mcc

IIRC when you rust iron in saltwater you get partially water-soluble rust (in contrast to rusting it in freshwater). I always assumed that the soluble part is iron chloride (which is pretty well soluble and supposedly has a matching color of solution), and that you'd still get that in absence of dissolved oxygen. But maybe I'm wrong~~

@mcc

Even rusting that doesn't involve oxygen?

@koniectorowiburaki

Czy ten ptaszek jest pusty w środku?

@_thegeoff @freemo

Maybe Scrapheap Challenge? (But it might be way less commonly known.)

@lumi

Have you noticed the weirdnesses around "visible to followers only"?

The technical weirdness is that when you reply to that, you end up replying (by default in Mastodon) with a reply visible to _your_ followers. (And depending on various antispam setups, you might not even be able to reply in a way visible to OP's followers[1].

The nontechnical weirdness is that it's followers and not followees. The latter is a collection you always control yourself, and a reason for having someone in there you don't want to share stuff with is less likely to materialize than for followers.

[1] You can only get OP's instance to forward to them (https://www.w3.org/TR/activitypub/#inbox-forwarding), which requires signed objects (because you might have no clue who the OP's followers are, if they hide the collection, so you can't let them fetch the post from you) that people don't want to use because it makes things nonrepudiable. Even if they do, then most likely such messages would be pushed only (and not pullable), so would have less reliably delivery.

@blaine

It is used for reply discovery. If you visit a post with your client, your instance will be looking for replies in (a) posts it already knows about (b) that collection.

Re subreplies: it's not a thing you can change later. If you decide that subreplies are simply replies to replies and not controlled by OP, you can't retrofit that later. The reason why I think deciding that only direct replies are moderatable by the post's author is that it creates a weird situation where they might have to choose between moderating out a reply they're fine with and not moderating out a subreply they are not fine with (but the reply's author either is, or haven't noticed yet). We have similar problems in APub already (things along the lines of A blocks B, B sends a post that mentions A, C replies to that post and that reply gets sent to A) that cause people to desire to e.g. block instances because they don't block some other instance, which creates churn, collateral damage (that people might feel wronged by), and encourages all instances to converge to the same moderation policy.