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pilom

3,076 karma · joined August 23, 2010

Remote worker, living and working full time from an RV: http://therecklesschoice.com
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pilom··on The Oldest Building in Every US State
Cliff Palace (the oldest one listed for Colorado) certainly isn't "intact". It's definitely a ruin.
pilom··on The Oldest Building in Every US State
"A person from the United States of America thinks something 100 years old is old. A person from the UK thinks 100 miles is a long way away"
pilom··on How to explain infinity to kids
Seriously? He gets this worked up explaining the difference between "the water is pulled out at the earth moon line" and "the water is pushed from the poles towards the earth moon line"? The net effect is identical.
pilom··on Ask HN: How has working remotely for long periods affected your social skills?
31, married, been working 100% remote with a 100% remote team for 5 years. My wife works outside the home but we took 2 years when she was between jobs to drive around the Western US in an RV (https://therecklesschoice.com).

Overall, I never felt obligated to be social with my co-workers because they never had the same interests I did. I do tech because it pays well and allows me to work remotely, not because it is my calling. So I never really found co-workers to be the ones that I hung out with. I do other things that I enjoy more and that is where I'm social regardless of working remotely or working in an office.

One of the reasons we stopped the RV trip was because it was isolating. We had social groups outside of work and the RV trip ripped us from those groups.

pilom··on In a Warming West, the Rio Grande Is Drying Up
The issue is that people are moving into land that wasn't used for irrigated farm land. If we in-fill to 2x the population density, there isn't any farmland to de-water. And most farmland in the southwest is just grazing land that isn't irrigated.
pilom··on SpaceX's plan to fly you across the globe in 30 minutes [video]
Assuming 1) a trip is about 10,000 miles in distance, 2) acceleration is constant and speeding up for 15 minutes and slowing down for 15 minutes, they are looking at (very roughly) 0.4g of additional acceleration i.e. you would feel 1.4 times as heavy as you do standing still on takeoff and landing. As you angled horizontally, the effect of earth's gravity would be counteracted by your centripetal acceleration so that you would feel approximately 0.4g at the midpoint of the flight. So 1.4g at takeoff and landing, 0.4g at the midpoint (again assuming constant acceleration due to thrust)

That sounds not too bad. Two 15 minute burns sounds in the realm of possibility.

Edit: changed some numbers and my conclusion.

pilom··on SpaceX's plan to fly you across the globe in 30 minutes [video]
We already have domed cities in Antarctica that test the psychological impact of living in desolate wastelands. It is in fact so desolate there that we can't physically access those places for months at a time and rockets wont change that one bit. You literally can not move a person to or from the South Pole research station for months of the year. Rockets aren't the tech needed.
pilom··on Tesla's Simultaneous Brilliance and Incompetence Revealed in Teardown of Model 3
Don't worry, you aren't allowed to repair your tesla vehicle anyway.
pilom··on Google changes its messaging strategy again: Goodbye to Allo, double down on RCS
One of the best features of using Google Fi as my cell provider is that I can still use Google Talk. Still works amazingly well and I can send text messages directly from Gmail or from my android phone. I love it.
pilom··on The 100th Meridian, Where the Great Plains Begin, May Be Shifting
If you'd like to read more about this, I recommend John Wesley Powell's biography: "Beyond the Hundredth Meridian: John Wesley Powell and the Second Opening of the West" https://amzn.to/2H2v7oZ
pilom··on Why undertakers are worried
I think they meant what if your body is lost at sea, or blown up, or burned in a fire, etc.
pilom··on Ask HN: What up and coming technology has you most excited?
We've modified adult cells of Huntingtons patients [0] but I can't find any reports outside of hackerspaces of performing it on full human adults.

[0]: http://www.businessinsider.com/researchers-use-crispr-to-edi...

pilom··on Ask HN: What up and coming technology has you most excited?
CRISPR. The ability to edit DNA in living animals (especially in the germ line) will cure genetic diseases, make us live longer, and increase our ability to feed the third world.
pilom··on Scientists Fix Genetic Risk Factor for Alzheimer’s Disease in Human Brain Cells
You can always take the test from 23andMe and then take your data to https://www.promethease.com/. That's what I did and it told my my apoE status. They will tell you all the things that 23andMe is not legally allowed to as they are just looking up what is known in SNPedia.

That said, the 23andMe test has unknown (or at least unpublished) false positive and false negative numbers for that gene so take any result with a giant grain of salt and if you're really worried about it, pay the real money for a real test.

pilom··on Rental car companies have been waging a quiet legislative war against start-ups
Sign up for the frequent renter program and it fixes all of these problems. When I rent with Budget with their FasTracks program, I either just pick the car I want off the lot and they bill appropriately when I leave the lot, or if I've chosen my vehicle ahead of time, I check a screen that tells me what spot to go to to find it and drive away. No lines, no giving them information at a ticket counter, they have all of it already.
pilom··on California should emulate Tokyo, where housing stayed ahead of population growth
If housing prices don't go up, landlords make profits from rents rather than appreciation. Currently in SF, if housing wasn't appreciating, landlords would demand a greater percentage of the purchase price from renters, or house values would stabilize at a lower point where rent receipts are enough to make a reasonable return.
pilom··on Knot Forensics
The stats I've seen are somewhere around 85% of right handed people will tie a granny-knot one way and ~85% of left handed people will tie it the other way (assuming you know where they were standing, i.e. what their starting orientation was, when they tied it). People who tie correct square knots are more likely to know about knots in general and are thus less likely to care about starting orientation so the correlation is less strong but still more than 50/50.

WRT the "knot only a butcher would know," I'm going to assume it was the surgeons knot because it is in a picture in the article and could actually be used correctly by both a butcher and binding a person. Only butchers and surgeons use that knot because it is used in cases when the rope/thread is extremely slippery as it makes it easier to keep the knot tight in those cases. No one else uses it though because it can come undone easier than a basic square knot if unbalanced as it is in the picture. So I believe that it could be an indicator that the perpetrator was the butcher.

Overall, I'd say less good than DNA evidence, better than phrenology.

pilom··on Wing Commander II
I went looking for youtube videos showing the current status of the game and unfortunately most of them are from when the 2014 models were released. You need to dive into the forums for the most recent models (they are supposedly in the process of packaging a 2018 model pack though). This video is using the most recent engine and models combined with some models from the Blue Planet player made mission pack: https://www.youtube.com/watch?v=wABQXJx7xFo
pilom··on Wing Commander II
Check out Freespace Open http://wiki.hard-light.net/index.php/Source_Code_Project_ind.... The engine for Freespace and Freespace 2 was open sourced and has been under continuous development for ~20 years. They've remade the rendering engine about 3 times to keep up with AAA titles. All of the ships have been re-modeled and textured to look great. You can play the original campaigns with the updated engine and graphics but there are also about a dozen fully voice-acted campaigns made by fans, some of which like Blue Planet and Silent Threat Reborn are utterly amazing. For $4 on GoG, it's hard to beat the shear number of hours of (really impressive) play time you'll get with the community improvements.
pilom··on Failed intercept at Dhahran caused by a software error in handling of timestamps
I learned about it in a Decision Analysis course and had a completely different point driven home. This wasn't bad code. It was code that was correctly written to a very well defined requirement ("System shall be operational for at most X hours before a reboot"). The code was written to a spec that was approved by the customer (the military). Unfortunately though, that requirement wasn't communicated to the end users.
pilom··on One year of cycling to work
Second vote for the Schwalbe Marathons. I got fed up with fixing a flat once a month when I lived in Pittsburgh and biked everywhere. Replaced my tires with Marathons and had to replace the tires for wear after a couple thousand miles before I patched another flat.
pilom··on To Power the Future, Carmakers Flip on 48-Volt Systems
My understanding is that 50-60VDC is approximately the voltage at which electricity will arc through a person's chest (i.e. pass through their heart) if they hold a wire in each hand. That makes it unsafe to handle without special insulating equipment. That doesn't mean that 48V is safe necessarily though. If your hand is wet or even just a little sweaty, you can arc from pinky to thumb at ~48V.
pilom··on How did Google Talk change from a dream to a nightmare?
One of the things I love about Google Fi is that I'm still allowed to effectively use Google Talk and SMS still works in Hangouts on my phone. I can do all messaging from the hangouts app with people over SMS or if they use hangouts, the message can go over that. I can text and call with my real phone number through the Gmail interface. Unfortunately, those with Google Fi are the only ones still allowed to use it that way.
pilom··on SpaceX’s Falcon Heavy successfully launches
The stream cut out before they were able to report on the main engine recovery. Anyone have more info?
pilom··on Dr. Seuss’ arms race allegory
I love his analogy to a tightrope walker. Sure a tightrope walker can walk a rope for a very long time without falling off, but if the rope is infinitely long, he'll fall off eventually. Same with nuclear weapons. We've had 70 ish good years where no one fell off the rope. But we have an infinite number of years to go. Someone will fall off eventually. The better question is, will it happen in your lifetime?
pilom··on SpaceX payload code-named Zuma failed to reach orbit after Sunday launch
Launch insurance can absolutely be given to classified payloads. My understanding of the launch insurance business is you say "my payload is worth $(X)XXX million to me and we're launching on this type of rocket" and the insurers look at the history of that rocket and your history as a payload manufacturer and charge you a 10-40% premium that gets built into the cost to the government.
pilom··on SpaceX payload code-named Zuma failed to reach orbit after Sunday launch
It ends up being a question of time and cost. Even if you make no changes to the design, the construction and verification of a new copy will still take years (verification of space payloads this expensive takes FOREVER!) and likely still cost hundreds of millions of dollars. I wasn't involved in the finance side of things but I'd guess that at least 40% of the effort would need to be duplicated for a project that size.

But most likely, technology will have progressed in the meantime and you'll want more accurate sensors or more powerful on payload data processing or more powerful/efficient radios so you can get more of the data to the ground. Spy satellites only have a useful life of around 20 years due to obsolescence of sensors. So you're going to end up wanting to upgrade the new one so you don't just lose 1/4 of it's useful life. So you'll probably end up designing a lot of parts again.

pilom··on SpaceX payload code-named Zuma failed to reach orbit after Sunday launch
I used to work on satellites and so I know how sad a day this is for some people. Think of the team that would be involved in a billion dollar NASA probe. There would be thousands of people involved from component manufacture to ground control to data processing to ground stations. A team just like that has just had more than 5 years of their life's work go up in smoke. Classified or not, it's still a sad day for space engineers today.
pilom··on Why Raspberry Pi Isn't Vulnerable to Spectre or Meltdown
You're exactly correct. This is why the browsers decreased timing resolution in javascript so that you couldn't time memory accesses accurately enough to tell if the address was cached or not.
pilom··on What Needs to Happen Before Electric Cars Take Over the World
I agree with you that the solar panels aren't going to run the motor, but the 660W of solar on my RV with a large battery bank and a 3000W inverter have no trouble running everything in my RV including the AC for an hour here or there (though we did replace the AC with a swamp cooler to be able to run longer in the southwest): http://therecklesschoice.com/2016/04/29/diy-rv-solar/
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