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Comment Greg Egan's science fiction stories are damn good (Score 1) 108

I first stumbled across Greg Egan's work about ten years ago via another slashdot poster... he writes really good hard science fiction.

My favorite is probably Diaspora. Things start off with a mass extinction event due to a nearby gamma ray burst. Things ramp up from there as the robotic and electronic survivors set out to explore the universe, in a bid to find other potential dangers and ensure survival. Their journey takes them on a grand exploration of the galaxy, simulated virtual universes, and parallel dimensions. Through it all, Egan throws in plenty of real math to make things interesting.

Comment Re:It's about landmass (Score 5, Informative) 468

Have you actually calculated the amount of CO2 released per distance traveled for a car powered by gasoline, versus one powered by electricity from a coal plant? If so, I'd be genuinely interested in comparing notes. If not, please sit down and do a quick calculation before claiming electric cars "tend to be far more polluting."

Here's my (admittedly rough) calculation:

Gasoline:
Approximately 9.5 L/100km (average for 2015 model year)
times 2.31 kg CO2 emitted per L gasoline burned
= 21.9 kg CO2 per 100 km traveled

Electric:
17.9 kWh/100km (for the 70 kWh Tesla Model S)
divided by 80% wall charger efficiency (Tesla claims 95%, some users report 80%)
times 0.527 kg CO2 per kWh (EPA average, includes line losses)
= 11.8 kg CO2 per 100 km traveled

Mind you, we're unfairly penalizing the electric car here because we're counting transmission losses over the power grid, whereas we're only counting the emissions from the gasoline already in the tank. A fairer comparison would take into account the carbon involved with gasoline distribution, but that goes beyond something I can easily estimate.

I'll admit I'm not factoring in the environmental impact of battery manufacturing. (I suspect it isn't as bad as the anti-EV crowd claim, since lithium isn't a heavy metal.) Perhaps someone more informed than me can speak to the overall impact of manufacturing an electric versus gasoline car... I'd be interested in reading their insights.

Comment Re:A little? (Score 2) 59

I once made a list of the usual sites that distracted me from work, and black-holed them in my hosts file. At first I was amazed at how often I would reflexively attempt to visit one of those sites before remembering my self-imposed blockade.

Interestingly, I don't think it made much of a difference in my overall productivity. I find that creative output comes in waves... I have days of pure concentration and peak output, followed by lulls where I occupy myself with busywork. The blockade really only impacted the lulls, since I didn't do much browsing during productivity peaks anyway. If my productivity during the lulls improved, the gain too small to be significant, and it came with the cost of increased annoyance.

After a few months, I got rid of the blockade.

Comment Pyrrhic victory (Score 3, Insightful) 426

I wonder what the advertisers think they'll gain if they manage to win this particular arms race. A wider audience of eager ad consumers?

Ad-block users aren't just people who don't like ads, they are the subset of the population who disliked ads enough to install a blocker. It's like when Microsoft changed the registry settings users had deliberately set to avoid the Win 10 "upgrade"... all they'll succeed in doing is angering those users.

Bypassing my ad-block won't turn me into a happy consumer of ads, but it will turn me away from that site.

Comment Re:The Internet of Things (Score 1) 77

You can't spell "idiotic" without IOT. Maybe I've gone prematurely old, but I have yet to come across an IoT feature or device that doesn't strike me as unnecessary, dangerous, or both.

At a minimum, who the hell thought the ability to remotely unlock the door was a good idea? (Yes, sure, I know you can construct some hypothetical scenario where such a thing is useful, but weigh that against risks inherent to such a feature.) I could maaaybe see "remotely lock the door" as a good feature, but the system had better be physically constructed in a way that it can only ever engage the lock.

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