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Comment Re:Are people this ignorant of basic online securi (Score 1) 45

Fortunately there is an easy fix. Education.

If education was an easy fix, we'd have an educated populace and ClickFix wouldn't be a problem.

The fact is, we live in eternal September. No matter how many people we educate, there's a unending firehose of exploitable n00bs arriving to replace them.

Comment 32 bits 64 bits big-endian little-endian (Score 4, Interesting) 26

I support a legacy app that was written back in the 1990s. It originally ran under VxWorks with custom hardware, variously 68k and PowerPC.

The first port I did was to Solaris. No byte-order issues and I kept the 32 bit ABI. It worked well.

When the Powers That Be decided to ditch Sun hardware and Solaris in favour of x86 and Linux I ported it to Linux. Parts of the code weren't byte-order clean, but I worked through them. The code is heavily 32 bit dependent and I never did create a viable 64 bit version (I tried, believe me...), so it runs on our last 32 bit server in the data center. The service it supports is slowly dying so there's no business case to spend any more time or money on it. If the business case existed I'd apply what I've learned in the meantime and rewrite it from scratch anyway.

The Linux port was initially unstable. It would run for a random time, hours to weeks, then two threads would deadlock. After a couple of years of letting it run and watching it crash I traced the deadlock to an "optimization" that didn't actually do anything, with an if statement that had about a one in a trillion chance of going the wrong way. I removed the optimization and the application has been running fine ever since.

...laura

Comment Re:Woke AI education is now a thing :o (Score 5, Insightful) 62

"Woke" simply means "I'm conservative, and the thing I'm calling 'Woke' is something that I hate". It has no well-defined meaning beyond that. I've heard things as diverse as "the concept of the Metaverse" and "removing copyrighted content so you don't get sued" described as "woke".

Comment Re:I wouldn't care if my taxes hadn't paid for it (Score 1) 88

Mostly true but not entirely. For the moment at least there are still applications such as airplanes where fossil fuels have no reasonable alternative. But yes, a large number of things that we currently power by burning long-dead dinosaurs could just as well work with other sources of energy.

And yeah, I think the whole world looks at the Middle East and is thinking: If you all so much want to kill each other, why don't we just step back and let you?

Comment Re:Poor design, not impossible (Score 0) 88

A practical issue with a circle is that it is not a circle until it is finished,

That's not the reason at all, AFAIK. The reasoning is, okay, we want people to be able to move from one place to some distance place in the city at the maximum comfortable speed, which is limited by G-forces. You have some guaranteed G-forces from first accelerating and then decelerating. But if it's linear, that's your only G forces. If it's curved, however, you also have radial G-forces.

The Line's train going from one end to the other (170km) nonstop is supposed to do it in 20 minutes, aka with a mean speed of ~510 kph. Let's say a peak of 800 kph. Now if we shape that 170km into a circle, that's 54km diameter, 27km radius. From the centripetal force formula a=v^2/r, that's 222,22...^2 / 27000 ~= 1,83 m/s^2, or a constant ~0,2g to the side. This is on top of the G-forces from your acceleration and deceleration. You can probably deal with ~0,2g in a train if everyone is seated without much discomfort, though it's double what's acceptable for standing passengers. But you can eliminate that if the city is linear (at the cost of increasing the mean distance that the average person has to travel to go from one arbitrary point in the city to another)

That's not to defend this concept. Because the city doesn't need to be 170km long; you can just made it more 2d and have the distances be vastly shorter (at the cost of just needing some extra lateral travel within the city). Honestly, if I were building a "designer" city from the ground up, I'd use a PRT (Personal Rapid Transit) system rather than trying to make it super-elongated.

Comment Re:“You do realise the earth is spinning?&am (Score 1) 88

What got me is that I don't see why this isn't readily resolved by active damping, the same systems that many tall towers now use to resist earthquakes or resonant wind forces. Big heavy weight at the top (or in this case the bottom) hooked up to actuators that make it move in an inverse direction to the sway.

Again, this is not to defend this colossal waste of money. I just don't see why there aren't ready solutions for this specific problem.

Comment Re:C'mon, Saudi (Score 2) 88

Agreed - but that said, there are space elevator alternatives, like the Lofstrom Loop / Launch Loop, which at least theoretically can be built with modern materials (and have far better properties anyway - not latitude-constrained, provides dV, vastly higher throughput, far more efficient, stores energy / can add cheap energy at off-peak times, etc). One could always "waste" money on them trying something new :)

Comment Re:Go for it (Score 1) 93

I come down on the side of Tsiolkovsky: âoeEarth is the cradle of humanity, but one cannot live in a cradle forever.â

A baby in a cradle is the wrong analogy -- a better analogy is an internal organ inside a body. Yes, you can (with advanced technology and at great expense) remove the internal organ from the body and keep it alive externally for some time, but it's going to be unpleasant for everyone involved, and sooner or later the disembodied organ will wither and die, unless it is returned to the environment it was specifically evolved to live within.

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