Why do large websites such as Reddit and Netflix use AWS to host, when self-hosting would be cheaper?
Unlikely that self-hosting would be cheaper, both because of the operations overhead, and because of the utilization factor.We operate out of 12 different AWS datacenters for redundancy and resiliency, and our footprint in each is actually not that large. We share AWS operational staff with hundreds of other businesses in each DC, which means they can be more specialized and much more cost-effective than if we had to have all those roles dedicated to just Netflix.We achieve utilization well over 50% on all our AWS hardware - because we lease it only when we need it, and give it back off-peak. Utilizations of 20% would be pretty normal in self-hosted data centers. In addition, AWS manages the growth space for us out of a giant pool. If it were our own datacenters, it would be hard for us to expand a contiguous cage of servers every year for growth, necessitating discontiguous clusters of machines and all kinds of challenges in networking, connectivity, security, etc.
Is inflation good or bad for economic growth?
Well if inflation rate is around 2 to 4 per cent than inflation is good for all nation especially for under developing nation.Inflation makes consumers to expect the prices to increase in future. When prices are going up, people will buy now rather than pay more later. This increases demand in the short term. As a result, stores sell more and factories produce more now. They are more likely to hire new workers to meet demand. It creates a virtuous cycle, boosting economic growth. Moderate inflation enables new investments to meet the demand if the demand pull inflation is a sustainable steady one. Inflation also help in remove the risk of deflation from the economy.However, too much inflation is bad. It can wipe away people's savings. It creates uncertainty because it makes it harder for companies to predict future prices and costs. This will cause them to delay or reduce their investments, which adversely affects the growth of the economy in the long run.
What is the impact of using eco-friendly products on environment?
There is no standard definition for the term and there’s a lot of greenwash around. We recently saw a company selling water in Aluminium cans as good for the environment when in fact it’s better to drink tap water or use refillable drinks bottles - ECO ArcadeThink of the waste hierarchy: reduce, reuse and recycle. Any product that reduces the use of energy or resources is good. Any product that reuses material or resources is good. Any product that uses recyled materials and is recyclable at then end of its life is good. Finally, even if a product does not meet these criteria but educates or inspires action on protecting the environment, then this can also be seen as eco friendly.
Do we need inflation?
Money has a number of functions. For the use of money as a store of value, 0% inflation would be best. However, that is not a particularly important function of money. (There are many different possible ways to store economic value over time.)For the use of money as a medium of exchange: low stable inflation isn’t especially significant. There are minor menu costs for price changes over time, but that isn’t important.For the use of money as a unit of account, which affects overall macroeconomic stability, inflation matters a lot. 0% inflation would allow easier comparisons over time. However, the real significant part is the observed very strong downward nominal wage rigidity (Nominal rigidity). Basically, essentially no workers ever get a nominal wage cut. This is basically like a price floor in any market, and so the labor market is much less efficient than it could be, unemployment is higher, and real output and wealth of the economy is lower.Low, stable, inflation allows the labor market to be much more efficient (by enabling real wage cuts, without requiring nominal wage cuts). And thus the economy and the nation sees higher growth rates, and becomes wealthier.A final point: many commenters completely misunderstand this whole question, and talk about inflation “stealing” money from workers, and “enriching” creditors. That’s completely false (at least, for expected, stable inflation). It is critically important to very carefully distinguish nominal changes (like inflation) from real changes (actual wealth). Inflation is just a change in the overall price level. It raises prices … and also wages! The effect of inflation on the real purchasing power of workers is completely independent. It could go either way. Real purchasing power might go up, or might go down, as inflation rises. There is no connection. If you ever see anyone saying that inflation causes workers to be poorer (as some answers here suggest), that’s an easy clue that the person has no idea what they’re talking about. That is not at all a consequence of inflation, and has nothing to do with whether inflation is a net positive or negative for the economy.
Would it be useful to deploy atomic clocks around the asteroid belt, as long as Earth circles the sun, equipping them with logs and transmitters, to track gravitational waves? Would it increase resolution, accuracy, range, and depth of observations?
The extension of LIGO into space, not using atomic clocks as suggested by the questioner, but rather, using a scaled up version of the ground-based LIGO interferometer, is well under way. This project is the Laser Interferometer Space Antenna (LISA), a European Space Agency mission planned to be launched some time around 2034.Source: Laser Interferometer Space Antenna ProjectThe current plan is for LISA to support a constellation of three spacecraft arranged in an equilateral triangle with 2.5 million km sides, orbiting in formation around the Sun around the Earth Sun L1 Lagrange point.Source: Lagrange points - WikipediaUnlike LIGO, which is maximally sensitive to waves in a frequency range of 10 Hz to 1000 Hz, the giant arms of LISA will render it sensitive to gravitational waves in the 0.1 mHz to 1 Hz frequency range, thus targeting entirely different classes of object than those that LIGO is searching for. Far away from noise from the Earth, it is envisioned that LISA would be sensitive to relative shifts in position that are less than the diameter of a helium nucleus, strains on the order of 1 part in [math] 10^{20} [/math] in the low-frequency band of the gravitational-wave spectrum.LISA should hence be able to detectorbiting neutron binary stars, neutron white-dwarf binaries, and black hole binaries in our galaxy,supermassive galactic scale black hole mergersExtreme mass ratio inspirals (EMRIs): captures of stellar mass black holes by supermassive black holesthe gravitational wave background resulting from hypothetical mechanisms prevalent in the early universe, including inflation, cosmic strings, and phase transitions in the early universe.A proof-of-concept test mission called LISA Pathfinder was launched in 2015 to test the technologies needed for LISA and was spectacularly successful, exceeding its design sensitivity by a factor of five.
My Dota 2 files is getting bigger. Can I delete the VPK files?
No, the .vpk files are the compressed files where most of the data (textures, models, voice files, music, etc.) that comprise the game are stored, and deleting them will render the game unplayable. The .vpks will naturally grow in size as Valve continues to add further content updates. If you want to free up space, try deleting unwanted replays [C:\Program Files (x86)\Steam\SteamApps\common\dota 2 beta\dota\replays], or even cleaning up other files from your computer. CCleaner is pretty good at doing this automatically, but you can do it by hand if you want to.