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Comment Re:Why they are slow? (Score 1) 766

Seriously? You have no idea how fork actually works.

fork() exploits the MMU by marking every page in the parent process as readonly, then sharing these pages with the child process. There is no immediate copying of memory.

Then whenever *either* process attempts to write to any of these pages of memory, the kernel will trap & duplicate the page before allowing the write to occur.

fork() is pretty quick. But you have to be careful to pre-initialise as much immutable state in memory as you can, then keep your mutable state centralised.

fork()-ing a new browser tab from a pre-initialised process may save you a lot of startup time. But if you then go and write small values all over the place, you could easily lose a lot of those gains.

Comment Re:The president doesn't control the economy (Score 1) 600

Everyone likes to obsess over the government's debts. But it is the debts of private citizens that should be your biggest concern.

During a boom, tax receipts go up and welfare payments go down. So the government debt can be reduced. If you want to blame the government for something, blame them for not saving during recent booms.

Now we are in a slump. Tax receipts will be down, welfare payments up. The government *should* be spending (responsibly...) to cushion the blow, but they actually have little choice in the matter. Austerity policies now would be a huge mistake. Taking money out of circulation, when the flow of money in the economy is already reduced, will just make a bad problem worse.

Comment Re:The answer is no, this is pointless (Score 1) 230

Many IOT devices have some kind of incoming data stream from the internet so that you can control them from your phone. This might be is via some company run cloud service, with questionable security.

For example,

it's a device that infringes my copyright, gives you root access in response to trivial credentials, has access control that depends entirely on nobody ever looking at the packets, is sufficiently poorly implemented that you can crash both it and the bulbs, has a cloud access protocol that has no security whatsoever and also acts as an easy mechanism for people to circumvent your network security

Comment Re:Really slashdot? (Score 1) 467

From the store page;

The standard Steam refund policy applies to No Man's Sky. There are no special exemptions available. Click here for more detail on the Steam refund policy.

It's a bad sign when they have to remind you of their refund policy. I bet their support system is completely overloaded with complaints, asking for a refund.

Comment Re:Ironic, Given HoloLense Doesn't do Holograms (Score 1) 113

As far as I can see from available information, the HoloLens has a focal distance somewhere around 2 meters away from your face.

Whereas in a "true" hologram, you capture the interference patterns of all light rays that pass through the volume of your photo sensitive film. Shining a laser through that film will recreate light rays with the same direction and intensity. As if you were looking through a window at the original scene.

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Truly simple systems... require infinite testing. -- Norman Augustine