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minuephysics - Why it's Impossible to Tune a Piano

draak13 says...

More like, why piano tuning methods need to be brought into the modern level of technology. Slap a spectrum analyzer on it, and tune each string absolutely.

Last Week Tonight with John Oliver: Back to School

draak13 says...

I also need logarithms daily as an optical engineer.

That said, a CPU only does +,-,*,/, and approximates everything with those basic functions, so maybe he's onto something...nah...:)

Lars Andersen, world's fastest archer, responds to critics

Liana Kerzner - An Honest Look At Women in Games

draak13 says...

I came into this video expecting some very well written collegiate content. I was seriously excited about learning something new about modern social trends. I listened for 10 minutes, and then had to stop.

While it seems there is a lot of good ideas and potential, it seems like this is a semi eloquently written rant about someone's personal experiences, rather than a well researched piece of work. I would be much more interested in learning how much actual data and truth there is behind the strong statements she is making...the actual data and research is the grossly missing component here.

A Response to Lars Andersen: a New Level of Archery

draak13 says...

Despite that measures of time may not be so analytically robust, there are reasonably good relative measures. Throw a stone into the air or drop it from a fixed height, and see how many arrows you can shoot before it hits the ground. Even if it were as long as 3 seconds, that's still an impressively short time to shoot 3 arrows in.

Xaielao said:

Her question of 'how did the Saracens count seconds' may be a little mocking but it's also incredibly apt. The idea of 'seconds' or even 'minutes' would have been completely foreign to them. The first clocks to measure seconds were invented in the late 17th century, and wasn't a common feature in clocks for another century +.

A Response to Lars Andersen: a New Level of Archery

draak13 says...

Not sure if I gave the wrong impression with my post; I wasn't suggesting that Archery on horseback was a bizarre thing to do, I was suggesting that it's bizarre to say a technique that's demonstrably robust to movement wouldn't work on a horse.

messenger said:

She was referring to the quote from that Arabic text at 3:15 which states that the practitioner must master horsemanship as well.

A Response to Lars Andersen: a New Level of Archery

draak13 says...

I have much more experience than the average person. Lars seems to invent and conjecture as much historical evidence as some other posters here, but what he does is very impressive. You could accurately classify it as trick shooting, but since archery is now a sport instead of a practical thing...it's all pretty gray.

What's neat is that Lars' technique works significantly better than current common practices...albeit in what are currently uncommon situations, such as riding horseback or running & shooting. There are 2 things that makes these kinds of situations difficult:

1) Keeping the arrow resting against the side of the bow and the handle. If you've ever shot before, most beginning shooters will have their arrow accidentally drop to the ground many times before they fire a successful shot. Even for someone who is more than a novice, a strong breeze can easily knock your arrow away from this notch. Shooting while on horseback or running is a whole new level of difficult.

2) Firing rapidly. Firing off many arrows in succession is a difficult thing, seriously. Despite Anna Maltese's dismissal of Lars' demonstration on why firing on the 'wrong' side of the bow is faster, it truly does remove many of the steps, and speeds up the entire process. In modern archery, Right handed people fire the arrow on the left side of the bow, and left handed people fire the arrow on the Right side of the bow. Reasons for this could be conjectured, but from personal experience, learning how to shoot the arrow from the wrong side of the bow is almost like learning archery all over again...it feels weird. From watching related videos, the way Lars holds many arrows in his hand, making sure to rotate each arrow into the appropriate knocked position each time, is a significant achievement that Anna did not touch on.

What's particularly impressive is that Lars has achieved improvements in both categories simultaneously by firing from the wrong side of the bow. To my knowledge, modern trick shooting is the typical shooting style simply with impressive feats of accuracy, or at best being able to throw an object into the air and hit it with one arrow. In comparison, Lars changed the way he shoots his arrows, and has been able to significantly upgrade the art because of it (throwing an object in the air and hitting it with 3 arrows before reaching the ground). In my opinion, this is beyond regular trick shooting, and warrants a reinvestigation on why modern archery is the way it is.

ChaosEngine said:

Out of interest, does anyone here have any expertise in archery?

I certainly don't, and my lay opinion of Lars was that it looked like "trick shooting".

A Response to Lars Andersen: a New Level of Archery

draak13 says...

This was really good! It's pretty obvious now that most or all the history was invented by Lars, instead of studied. However, there are a few points that she didn't touch on or completely dismissed.

She makes a quite unsubstantiated claim that ancient people cannot measure time, and dismisses the entire speed advantage of the technique Lars is using. I would have liked to see how she would have addressed the account on the native american chief's abilities at speedshooting, where Lars pulled (invented?) an account that the chief could shoot 10 arrows into the air before the first one hit the ground, and Lars managed to break that record. Despite that a great deal of historical drawings are indeed poor at describing technique (just look at how many drawings depict the horse's gallop incorrectly), this is a metric that is easily recorded. Unless another modern archer has managed to come close to shooting 10 arrows into the air before the first hits the ground, the chief's technique has indeed been lost, and has potentially been revived through Lars.

Additionally, she mocked Lars a bit, calling out, 'where's his horse?', as if his technique wouldn't work on a horse. But, she then showed videos of people rapidly firing at targets while riding on horseback. Again, Lars' technique has a tremendous speed advantage, and he makes it obvious many times over that this firing technique can be performed during acrobatic stunts. If archery truly is about 'what works', this would work better.

Finally, she did a great job at pointing out how Lars was shooting with relatively little force compared to full draw on heavy bows. Indeed, where Lars shows he can pierce chainmail, he was shooting substantially slower, likely to pull back more weight. However, against unarmored or lightly armored opponents, it may not be necessary to pull back 80+ pounds. Instead of trying to invalidate his entire technique by saying he wouldn't be able to pierce full platemail without extremely high force, it would be more accurate to say that the tremendous speed comes at the price of lower force per arrow.

While Anna Maltese brought up many great points about historical fabrication and showed that Lars is overly sensationalizing his technique, she is committing the opposite sin by entirely dismissing the technique's advantages.

Someone stole naked pictures of me. This is what I did about

draak13 says...

Actually, @ChaosEngine's comparison to online banking is exactly analogous to this situation. Her pics were hacked from her account. Thus, the day that your account is hacked and your identity is stolen...why are you online banking? That's a great way to get all of your money stolen. You really should have known better. If you end up homeless with no money, it really was your fault for not protecting yourself better.

You and others are correct that it does indeed present some level of risk to take nude photos of yourself at all, but all things in life present risk. If you don't want bad things to happen to you, maybe you shouldn't ever leave your house, log on to the internet, or talk to anyone. Of course, that's wildly unrealistic. The way that you present yourself makes it seem like you're callously taking this argument too far.

In contrast, @SDGundamX has taken a pleasantly moderate viewpoint on this, and I feel more enlightened from reading his posts and considering the moral ambiguity. I just wish he didn't get snarky at the end, and be 'dismayed' that people would criticize those who take the opposing stance =P.

All of the arguments aside, I appreciated her rebellion against this negative situation, and I hope that this tasteful video does good things for her.

Jerykk said:

Again, this isn't about rights or principles. It's about reality. We live a world where many people don't care about your rights or the law. If you give them the opportunity, these people will exploit you. If you don't want to be exploited, you need to avoid creating such opportunities whenever it is practical to do so. Ideally, we wouldn't have to do this. Ideally, everyone would share the same principles and values and we would all coexist in harmony. But that's not the world we live in.

Also, your analogies are pretty silly. Sending nude pics of yourself to someone is in no way comparable to using online banking. Banks have exponentially more security than whatever messaging or e-mail service you're using to send pictures, not to mention that the person receiving the pics can do whatever they want with them.

Women Attacked By Fake Cop In Road Rage On Highway 80

World's Simplest Electric Train

draak13 says...

Very neat idea!

If you replaced the magnets with a non-magnetic material conductively glued onto the magnet, it would still work. From wikipedia on 'electromechanical solenoid',

Electromechanical solenoids consist of an electromagnetically inductive coil, wound around a movable steel or iron slug (termed the armature). The coil is shaped such that the armature can be moved in and out of the center, altering the coil's inductance and thereby becoming an electromagnet. The armature is used to provide a mechanical force to some mechanism (such as controlling a pneumatic valve). Although typically weak over anything but very short distances, solenoids may be controlled directly by a controller circuit, and thus have very quick reaction times.
The force applied to the armature is proportional to the change in inductance of the coil with respect to the change in position of the armature, and the current flowing through the coil (see Faraday's law of induction). The force applied to the armature will always move the armature in a direction that increases the coil's inductance.

The Antares rocket exploding at liftoff

draak13 says...

I personally encourage your philanthropic interest in privately funding scientific research. As a scientist and engineer, I encourage you to give me all of your money.

Also, pay your taxes. I need that money, too.

Trancecoach said:

I find it disgusting that people allow the government to have excuses and second chances but disallow the same for private sector. Neither should have excuses! It's not like there weren't inherent risks involved that could've been avoided. For example, NASA was fully aware of issues with Apollo I and was even warned by the astronauts themselves. They went ahead with it anyway and it resulted in a fire that killed all 3 astronauts. It wasn't a "sacrifice that needed to be made for science." It was negligence, pure and simple.
One thing I admit is that there was an artificial drive to get the moon -- which resulted in wasted dollars and lives because of negligence and the absence of pricing mechanisms -- that probably wouldn't have occurred in the private sector. So, how does that affect our everyday lives? How does that improve our lives? That's what the private sector works on. Not government. I think it could've been done better by the private sector as proven by parallel public versus private sectors in other markets. But really, there would have to be a desire and an efficient business plan. I don't honestly see what the problem is for not wanting to go to the moon right now.
http://blogs.scientificamerican.com/the-curious-wavefunction/2014/03/27/are-we-entering-a-golden-era-of-private-science-funding/

The Antares rocket exploding at liftoff

draak13 says...

It is incredibly unfortunate that something like this would happen again; it's a good thing it was only carrying supplies. While we could label this an accident, it's tragic that we haven't learned how to avoid accidents like this after this long.

On a different topic, your idea that science & technology could be crowdfunded is extremely naive. Nearly every science & technology company has used state or federal government funds at least at some point in their time, especially the 'private' government contracting companies you're referring to.

Trancecoach said:

Yes, it was a private company contracted by NASA, so its income was theft as well.

If a private company funded voluntarily had people DIE in ANY of their projects, they would no longer be a company. Why give NASA the second (third, fourth, etc.) chance? There are private companies coming into play that have improved technology in the past few years for what took NASA decades.

It's possible to provide services without the State. In fact, it should be preferred, considering the quality of products and service voluntary interactions have provided.

homelessness-nowhere to go but jail

becoming belle knox-duke university porn star

draak13 says...

This was absolutely incredible! Many late bloomers have an incredibly important 'coming out of their shell' experience, and it's often when they role play as a person with higher confidence. It's a transforming experience that imbues high self-confidence and esteem onto the individual, when these were typically dwindling traits beforehand. I've known several (self included) who experienced this by either internet games or old fashioned role playing games. It's very interesting that she found this role play experience by creating an alter ego as a porn star. She even found solace for her previous sexual baggage. I learned a hell of a lot from this, and won't be viewing the porn industry the same way again. Despite many of the evils in the industry that she hinted at in this series, this is an incredibly great thing that she pulled from it, and is obviously even more valuable than the ostracizing she's experiencing because of it.

I also hope that she knows a bachelor's in sociology qualifies her for no skilled labor jobs. She better either go to grad school, or get some real skills...otherwise, porn really is her career, and it only lasts as long as her looks. It's good that she's not going into debt for that degree.



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