HNHacker News
TopNewBestAskShowJobs

danepowell

629 karma · joined October 28, 2013

submissionscomments
danepowell··on The End of the Taxi Era
Eh... I suppose Lyft is technically a competitor, but at an order of magnitude less marketshare, it might as well be non-existent.

http://www.fool.com/investing/general/2015/05/24/lyft-vs-ube...

danepowell··on The End of the Taxi Era
There's a certain sense of schadenfreude and cosmic justice knowing that Yellow Cab probably could have saved itself by pivoting their business model years ago like DeSoto did. Instead they tried to fight change with legislation, and this is their reward.

Having said that, I do worry about this contributing to Uber's growing monopoly...

danepowell··on Waterproof Quadcopter Is Also a Submarine
Sounds great, if you stop reading before the second-to-last sentence:

"Because radio transmission through water is difficult, the craft must be tethered at this time to provide continuous communications."

danepowell··on Raspberry Pi Zero – Conserve power and reduce draw to 30mA
To put this in perspective, 30mA costs about $0.15 / year at typical US electric prices. 500mA is $2.50. A tiny draw regardless, but probably a lot more significant if you're running on batteries.
danepowell··on What happens when you eject at 780mph (2010)
The B-58 Hustler escape capsule is probably the best operational example of this. It allowed pilots to eject at speeds up to Mach 2 (!!).

https://www.youtube.com/watch?v=QbgeUNjsenA

danepowell··on Beware of ads that use inaudible sound to link your phone, TV, tablet, and PC
This is why on-demand permissions are one of the best features of Android 6.0. Don't want Netflix to access your microphone? No problem--don't let it.
danepowell··on Google loses data as lightning strikes
This raises a relevant concern that's been on my mind: what's the best way to back up cloud services? Given that services like S3 and Google Drive have many more nines of durability than any local storage system I could devise, are backups even worth the trouble?

There are a lot of cloud-to-cloud backup services out there, but to me that seems like the blind leading the blind, especially with regards to malicious data destruction. For instance, I've recently been experimenting with Cloudally to automatically back up Google Drive, which seems like a good solution at first- until you think about the fact that Cloudally uses Google accounts for authentication (and doesn't use 2FA for native authentication). In other words, an attacker with access to my primary data (Google Drive) would also have access to my backups. Worse than that, Cloudally actually increases the attack surface, since its lack of 2FA presumably makes it easier to crack than my Google account.

Similarly, I'm guessing a lot of cloud backup services share data centers with the services they are backing up.

danepowell··on Germanwings plane crash: Co-pilot 'wanted to destroy plane'
It seems clear that in this case the co-pilot's actions were voluntary, but what if a co-pilot were to have a medical emergency while (s)he's alone in the cockpit? Would the pilot be able to re-enter?

This seems like a huge risk that wasn't considered when the new strengthened cockpit doors were installed.

danepowell··on Why Does the International Space Station Have That Shape?
Thermal radiation is an order of magnitude less efficient than other forms of heat transfer, but it gets the job done. It helps that you're radiating to the dead of space, which is near absolute zero (efficiency is dependent on the black-body temperature of what you're radiating "to").

That's the why the radiators have to be so huge, and are kept out of direct sunlight.

danepowell··on Why Does the International Space Station Have That Shape?
I'm guessing it refers to the problem when docking the shuttle or other spacecraft of making sure that thruster exhaust is never directed towards the station itself. I remember seeing a video that showed the shuttle approaching the station on a nautilus-shell sort of trajectory, so that thruster fire was always directed out and away from the station.

Apart from the obvious danger of impact from ice and other debris from thrusters, unburnt hydrazine is nasty stuff- you don't want to deposit any on the station, only to have an astronaut on EVA scrape some off by accident and bring it back inside.

danepowell··on This Guy Found a Way to Block Robocalls When Phone Companies Wouldn’t
Doesn't work on Android 5 / Lollipop.
danepowell··on Facebook was down
"Never attribute to malice that which is adequately explained by a configuration problem."
danepowell··on US segment of ISS evacuated due to possible cooling system leak
There's usually two three-person crews on the station at any given time, so two capsules are kept docked and ready to serve as lifeboats.

Since the Soyuz is the sole means of transportation to and from the station, they simply put the capsules into a rotation. When a new crew arrives, they leave their capsule docked and the departing crew rides the oldest capsule back to Earth.

danepowell··on Writers Say They Feel Censored by Surveillance
Except it doesn't it really eliminate bad behavior- it just stifles innovation and civil liberty.
danepowell··on Classic arcade game TRON on a cloth modelling grid
Did the screen keep waving for anyone else after stopping the game? I'm feeling a bit woozy...
danepowell··on Police allow car break-ins to become a Seattle growth industry
I disagree, and I don't think hyperbole furthers the discussion. I've been helped by police in many cities (in America and elsewhere) on several occasions. I've also witnessed harassment, abuse of power, and indifference- fortunately less so than the former.
danepowell··on With Dry Taps and Toilets, California Drought Turns Desperate
Detroit tried something similar (albeit for different reasons). Didn't work out so well for them: http://www.npr.org/blogs/money/2014/08/08/338068996/episode-...
danepowell··on The Most Terrifying Thought Experiment of All Time
If we're going to talk about Yudkowsky and boxes, the AI-Box experiment is much more interesting than this silly "basilisk" nonsense: http://yudkowsky.net/singularity/aibox/
danepowell··on Why blurring sensitive information is a bad idea (2007)
He wasn't just a pedophile, he was a child molester.
danepowell··on Is TLS Fast Yet?
I don't think the biggest hurdle with TLS adoption is performance- it's the added complexity of integration with load balancers, reverse proxies, mixing of HTTP/HTTPS content, having to manage certificate passwords and enter them whenever you (re)start a web frontend, etc...
danepowell··on Dragon V2 Unveil – Webcast
There are some good reasons that NASA has avoided touchscreens, besides the ones pointed out here:

* Things tend to get loose in microgravity. You don't really want things floating into a touchscreen and performing unintended actions.

* During ascent and descent, it's incredibly hard (potentially impossible) to hold your hands out in front of you to operate something like that. The Orion has hand controllers next to each seat, which are notably lacking here.

danepowell··on One of my Drupal sites was hacked
I've been building Drupal sites for 6 years, and I've never had a single one get hacked, even after I stopped updating them. It's far more likely that FTP with a weak password was the attack vector.
danepowell··on Keurig Will Use DRM In New Coffee Maker
While my instinct is to agree with you, I suspect the waste and emissions from producing and transporting the coffee greatly outweigh those from the half-ounce plastic container .
danepowell··on Namecheap now offer .io domains
I switched to Namecheap several years ago and have never looked back. They are one of the only registrars to offer two-factor authentication.
← PreviousPage 3 of 3