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Comment: Re:Commenting on signal not crossing chip (Score 1) 168

by expatriot (#47687959) Attached to: Processors and the Limits of Physics

Pipelining increases performance and instructions per cycle, but at the cost of power efficiency as branches cause a pipeline flush.

The problem is balancing area, performance, and performance.

There are obviously limits the the ability to make smaller circuits, even the ones described as 14nm are not really 14 in the same way 160 was 160. There is a lot of wasted space because of the LELE process and the need to minimise crosstalk and distortion.

The real limit however is not how much better X-ray exposure will shrink the size, but how much it costs to make circuits, 28nm is likely to be the most cost efficient size for some time to come. Many fabs are making chips in larger process sizes for fast turnaround and cheap masks.

Comment: Re: expansion of space and dark energy (Score 1) 358

by expatriot (#47166733) Attached to: The Disappearing Universe

Some theories for the end of the universe say that if the expansion of the universe keeps accelerating, eventually the expansion even between subatomic particles will be greater than the speed of light and everything will be ripped apart. This is long long after the skies are black because all objects and space have moved too far away.

Comment: Re:Well... (Score 2) 493

by expatriot (#47119355) Attached to: Mutant Registration vs. Vaccine Registration

This is one of those topics that attracts loonies like flies to honey. Of course in the comments below, each side thinks the other side crazy too much control or too irresponsible.

For me, I think everyone should be vaccinated for common and dangerous diseases. The uncommon ones you can chose to or not (as when traveling). People don't remember polio and smallpox or brain-damage caused by measles.

Comment: Re:Good? (Score 1) 510

by expatriot (#46712047) Attached to: How Cochlear Implants Are Being Blamed For Killing Deaf Culture

“I would not hurt you, little man,' he said.

'I think that I got the disorder in Mullingar,' I explained. I knew that I had gained his confidence and that the danger of violence was now passed. He then did something which took me by surprise. He pulled up his own ragged trouser and showed me his own left leg. It was smooth, shapely and fairly fat but it was made of wood also.

'That is a funny coincidence,' I said. I now perceived the reason for his sudden change of attitude.

'You are a sweet man,' he responded, 'and I would not lay a finger on your personality. I am the captain of all the one-legged men in the country. I knew them all up to now except one—your own self—and that one is now also my friend into the same bargain. If any man looks at you sideways, I will rip his belly.'

Flann O'Brien, The Third Policeman

Comment: Re:Higher SAT scores, etc (Score 1) 529

by expatriot (#46506755) Attached to: The Poor Neglected Gifted Child

And then a question you answered in more detail is marked down because you included content not covered in class, or a question requires the exact quote from the lecture instead of the facts, or your teacher is just wrong about the facts and criticizes you for disagreeing, or you answer all the questions on a test and the rest of the class is given D's because the test is on the curve.

Comment: Re:Id|ot|c article (Score 1) 545

by expatriot (#46446085) Attached to: Meat Makes Our Planet Thirsty

Clean water from hundreds of miles away is contaminated and them it flows into salty ground (see Australia for an example of this.) Some of it evaporates and descends as snow or rain far away from you. A small amount is retained deeper in the ground which would be great for some plants, but not so good for tomatoes or grass.

Water is not destroyed, but you have to pay for more for the next irrigation cycle.

It might as well be destroyed. If this were not true there would not be such a debate on the volume water extraction from rivers and aquifers.

Truth is free, but information costs.

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