Isn't a document (what you own) + showing up physically so you can be scanned by eyeballs already not 2FA? What better authentication you can get than that?
> Only if the document or their system has a photo of you. Usually driver's license is used for this.
In my experience, using the identity card is more common. Only drivers have a driver license, but nearly everybody has a identity card (and every identity card has a photo); and AFAIK, the identity card is one of the mandatory documents to get a driver license.
Not in the US at least. My driver's license is the only thing I have with a photo of me on it. There are state non-driver IDs but they're unusual to see.
The context was Brazil (see sibling reply a few levels up), and here indeed all identity cards have photos. Both the old per-state models and the newer federally standardized models have them, and nearly everyone has an identity card. It's not unusual to see identity cards being used everywhere; even some commercial buildings ask for (and take photos of) them from visitors (regulars have badges, and of course they had to present their identity card to get the badge).
Is it really a big deal for megaproject? Not like someone wouldn't know what elasticsearch is or where to look for source code. Yeah, there are billions of people on planet and some may be casually exploring some repository tops and stumbling upon and getting to know elasticsearch that way. But if one wants to find solution for search, I don't think github stars matter.
I guess ES has enough brand recognition. But it'd be killer for a lesser known project. While stars don't matter per se, they do give a project some credibility over a project with 0 stars or 50 stars.
If someone looked at both Elasticsearch and Opensearch and was new to the area, they'd think Opensearch was the original and ES the fork.
Yeah, stars/watches don't seem like a huge deal to me - but the fork part is pretty bad. It breaks the upstream connection between repos for all the forks.
8 years ago someone accidentally deleted the elasticsearch repository (thinking it was their private fork ). Back then everything was restored, so I hope we get there again this time too
I'm the maintainer of a reasonably popular project (~9K stars) and it's certainly a nightmare scenario given that I consider the stars to give it credibility in a crowded space.
Single gives you some guarantees about the returned value. Use First/FirstOrDefault if you don't need those guarantees. You can also provide predicate for FirstOrDefault to select First element that matches your predicate.
> Enumerable.Single Method - Returns a single, specific element of a sequence.
Some overload descriptions:
- Returns the only element of a sequence that satisfies a specified condition, and throws an exception if more than one such element exists.
- Returns the only element of a sequence, and throws an exception if there is not exactly one element in the sequence.
Interestingly, trolling does not appear to be against the guidelines, but posts like yours suggesting someone might be (close to) a troll are. After all, the guidelines tell us to assume good faith, but do they say anywhere that you must post in good faith? It seems like our only recourse under the guidelines is to flag a post and hope for the best.
>SpaceX likes to simplify and not to complexify things. And they demonstrated they can do landing accurately.
Yes. Something falling into a web of cables. I'd say it may be simpler than optimally controlling that last SnakeX maneuver to be hugged by a short-armed T-Rex.
>Think about physics involved for longer arms and how much more stress you will putt on the connection points.
That's why I wasn't talking about arms, but cables, as explained by most of the reply.
Did you think about how you support the cables ? Surely they must be tensionned or else they will hang. How do you tension them ? Of course you know that the more the cable is tensionned, the more force you need. So you need a big-ass structure to hold all of these cables. They must be able to circulate around the perimeter, while being in tension, while not collapsing the structure that holds them, etc..
I'm sure you think it's easy, but I'm sure some people thought a bit more
>Did you think about how you support the cables ? Surely they must be tensionned or else they will hang. How do you tension them ?
Mechanical advantage. The booster weighs 250 tons. A 40' shipping container has a max payload of about 30 tons. There are cranes that can lift 250 tons, and it won't be one, but many. Have you seen gantry cranes?
>So you need a big-ass structure to hold all of these cables.
Similar to the big-ass structure holding the 250 ton booster with the T-Rex arms?
>They must be able to circulate around the perimeter, while being in tension, while not collapsing the structure that holds them, etc..
Not circulate, but translate. The cinching in is a result of them translating. Again, see cranes and gantry cranes. Or, just see the actual chopsticks: circulating, not collapsing the structure that holds them, while being in tension, holding the booster at the free end.
Are you seeing the shear and moment diagram of that cantilever beam with point load? (I know, it's an extension of a supported beam, but still cantilever).
>I'm sure you think it's easy
I'm not sure I think it's easy, I can't see how you're more sure than I about my own thoughts.
>but I'm sure some people thought a bit more
You are people, too. Nothing prevents you from thinking as well, if for nothing than to have a civil conversation on a forum.
Now, that's all fun. Imagine they keep it the way it is, but they duplicate the setting to make a circle, so the booster lands in the middle of many chopsticks... What do you think about that?
The crane lifts on the same axis as gravity, so the force is the same as the object. If the cable is horizontal-ish the the force is X/cos(a), which can be many times higher than the object
> so the booster lands in the middle of many chopsticks...
And how exactly this requires less precision? I see multiple issues:
- No way to escape/last second abort away from tower once you dipped into that net.
- The booster arms must be longer/heavier, the tower support structure need to support more weight.
- Cables have a lot less thermal mass than the tower/arms - if the torch coming out of raptor engines will touch the cable, it may either cut or soften the cables and they will behave in a different way.
I mean we could have had this discussion previously but now they demonstrated on the first try that they can catch the booster... why bother?
>I mean we could have had this discussion previously but now they demonstrated on the first try that they can catch the booster... why bother?
Because these things must work every time, not just the first time. Because why not talk about it, it's an interesting topic and musing about it is amusing. Because it's not a bother. I'm surprised one needs a reason, but here are three already.
Good luck not ruining rocket with that cable web. Now you got other problems to target into some cell. Moreover cables could be lingering depending on thrust. Or maybe thrust will just cut em easily.
Nissan Leaf Visia owner here. The car is the most basic of 4 trim lines. I installed Nissan app and couldn't connect the car and found out that connectivity feature is not available for my basic car.
Someone advertise me why vacuum cleaner needs internet?
I have xiaomi unit and I haven't connected it to an app, so it has no connectivity. It does it's job - cleans house 1st floor.
Is it useful to target specific places to clean? Ok, that is a feature that would be useful but I can live without.
Remotely starting? Fancy feature not sure I need - you can aswell start it when leaving the house. Maybe useful for some people when wanting to cleanup after guests remotely, but then again who knows what's dropped on floor there.
> Someone advertise me why vacuum cleaner needs internet?
It doesn't. And it isn't like hosting a web-portal is some kinda alien technology that can only be done in the cloud. There's absolutely no reason that a robot vacuum couldn't serve its own web interface.
TIL that AM radio is still a thing... But I see valid use cases listed. I dunno if it would even click in case of emergency to even try turning to AM instead of FM.
I live in Europe, own a US car Toyota Sienna and I cannot use FM radio (completely) because turns out (and I also learned it few weeks ago) that in US, only uneven channels are used (101.3, 101.5, etc). And I cannot tune it to 101.4!
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