Really cool project. I was a bit confused about his explanation on measuring where the anchors were in space. Why would a tape measure not be enough?
I was also a bit surprised that more primitive CV wasn't used to track the ball--he had to freeze the ball and then machine holes into the ball to insert tracking objects. I would have thought that image recognition could have solved the problem without the trackers. Maybe the issue was that this requires very low latency?
He doesn't need to know the anchor positions accurately - this was extra work he didn't need to do because he has feedback on the hoop position (via the cameras), so even very rough measurements will be fine.
The 'cable slack takeup' devices are also unnecessary because that can be done in software - you can put a virtual spring in the motor control feedback loop to make it act as springy or rigid as you like.
I can imagine the need for both came about from previous (unseen) design iterations that had low frame rate visual feedback and motors without feedback at all.
Tape measures are bendy and would require keeping / knowing the right angles even if the walls and floor are not completely straight. Then you get measurement error on top (both in the wall plane coordinates and how far does the attachment bit sticks out) that skews everything a bit.
Better infrastructure (so that people don’t have trouble getting to grocery stores)? Better education (e.g. pay teachers more so public schools can attract knowledgeable people instead mostly people who can’t find other jobs)? There are many nice things you can fund, but very few of us want to pay more from our own pockets, either directly in taxes or indirectly in inflation.
It's hard to argue with this stance. What you're saying seems reasonable, although it's clearly a solution that wouldn't pay off immediately.
But if the goal is to get better nutrition to children more assuredly, doesn't the direct solution make more sense? Just give the children better nutrition for free in the place they're forced to go to each day.
Maybe your mindset is geared towards solving more over-arching problems than that. And I completely agree with infrastructure and (especially) higher pay for teachers to increase the quality of education. I'm just musing out loud.
Along with Sumatra, agreed that IrfanView is an incredible gem. It will take pretty much anything you throw at it, and is incredibly lightweight. When doing animations, I can load up a folder with several thousand images and just hold down the right arrow key to get a preview of the animation via IrfanView.
> People who take time off to travel or otherwise enjoy their life don't do it based on the charity of working people as you seem to assume. They already worked, created value, saved some of that value, then spend their stored value as they please. Why does that make you so angry?
Exactly. Odd that the parent commenter is bitter about the idea of people enjoying their money. You earned the money, and if you wish to spend it traveling/any other old thing... well why not?
A full-thickness burn is going to cause a lot of problems; an increased risk of cancer down the road is likely to be the least of your problems.
That said, inflammation and tumors are surprisingly tightly linked: many tumors co-opt inflammatory pathways, or use them to establish favorable "micro-environments" that allow the cancer to proliferate.
It crashed after I created a code block, converted it to a quote block, and the hit ctrl+z to undo (something about a history node not being found, I think. Sorry, should have saved the output).
Sure, just submitted a new issue. Included in the issue, but I think there might be a more general problem with how block conversion is handled (at least for quote and code block types). On firefox at least, it's pretty easy to crash this by messing with block type dropdown.
I don't think an application has to actually do anything with the audio data in order to retain its access to the microphone. I'm not an expert here, but I'd imagine it's something like this:
mic = grab_access_to_mic()
while app_is_running:
if (is_muted):
pass
else:
send_that_audio(mic)
It also mentions some of the apps sending the muted audio "to the cloud", which seems completely unrelated to retaining access to the mic.
Also, seems like an honest mistake, but I think they got this backwards, right?
> They used runtime binary analysis tools to trace raw audio in popular videoconferencing applications as the audio traveled from the app to the computer audio driver and then to the network while the app was muted.
Wouldn't it be driver -> app -> cloud? I think I'm splitting hairs at this point though.
Lastly, it would be nice if this article at least listed the apps that were investigated.
It was inappropriate language, but I think there is a valid point to be made.
Assuming good faith (ie: not lying) is similar but distinctly different from assuming that someone is speaking truthfully/accurately.
>> Considering how often antidepressants tend to be a hit-or-miss game (not to speak of side effects), I am a bit annoyed psychedelics don't get more attention for medical use.
> Psychedelics are actually extremely hit-or-miss as well. Anecdotally, psychedelics don't always send someone in the right direction post-trip. If you scroll the comments in any popular psychedelics-for-depression post on Reddit, there are almost as many negative experience reports (including some long-lasting) as there are positive reports. The positive reports receive the bulk of upvotes, though, so you have to scroll down to see them.
> Perhaps less anecdotally, any medical professional will see a non-trivial number of people with significant negative effects of psychedelics, from worsening depression to HPPD to existential crises or psychoses. An actual doctor had a great comment on the previous discussion: https://news.ycombinator.com/item?id=30995831
Looking at some of the discrete claims:
> Psychedelics [are actually] [extremely] [hit-or-miss] as well.
This asserts that results (across all instances of usage, not only those that have been studied under formal conditions) are highly random/inconsistent, in fact.
This is highly contrary to my personal experiences, as well as the reading I have done on others' experiences.
(Of course: we should keep in mind that it is unknown what percentage of experiences get posted, whether positive trips are more likely to get posted than negative, etc. - but "both sides" suffer from these problems.)
> Anecdotally, psychedelics don't always send someone in the right direction post-trip.
This true statement notes that they don't always do something positive, but it might be interpreted as being logically supportive of the preceding assertion, even though it is not.
> If you scroll the comments in any popular psychedelics-for-depression post on Reddit, there are almost as many negative experience reports (including some long-lasting) as there are positive reports.
This makes a quantitative claim that is extremely inconsistent with my fairly substantial experiences reading trip reports, which lines up with what /u/rileyphone said:
>> My experience, and recent search, indicates these are usually about 80% positive, and most negative experiences stem from predictable abuse patterns.
-
> The positive reports receive the bulk of upvotes, though, so you have to scroll down to see them.
This seems to imply that the negative trip reports are hard to find, which leads to people having a false impression of what is true. If one reads forums regularly, it seems unlikely that all negative reports were downvoted to oblivion before being seen by regulars, which is inconsistent with my experience on most forum software.
I thoroughly enjoyed this article, it was a bit of a breath of fresh air.
Some quotes that resonated:
> There should be no illusion: today’s culture war cannot be won by any side.
> Good faith communication is both a complex skill and a value commitment that shapes personal identity. In other words: doing it is sufficiently difficult that getting good at it will change the kind of person that you are.
> Delicately transforming a situation of escalating bad faith requires the slow establishment of previously unrecognized shared interests, often on issues as basic as self-preservation. The goal in most cases is not agreement—that would be naive—the goal is simply to preserve the possibility of communication itself.
Also learned the term "steelmanning," which seems to be pretty much identical to the hacker news guideline:
> Please respond to the strongest plausible interpretation of what someone says, not a weaker one that's easier to criticize. Assume good faith.
But yeah sometimes I'd have to regenerate before I got non-glitchy audio. Still though, very cool.