andars

The techcrunch article says there is a SIM card.

Without "the".

"I'll take 85"

The author concludes an SMS code is two-step auth, not two-factor, because the code could be transmitted over Messenger. This allowed the author to authenticate without physical access to the device.

I fail to see how pushing a button makes a significant difference. Instead of sending a code, I'll just ask my friend over Messenger to push the button. Authenticated without any more physical access than with the code system.

That doesn't seem like an ethical issue.

> The US isn't a fascist dictatorship.

Which is why he didn't go to jail.

> There's nothing wrong with dis respecting the national anthem

Sure, it isn't illegal, but that doesn't mean individuals can't be offended by it. To many, the national anthem carries significant meaning.

DMA allocations have no problems with caches, but in some situations you can get a performance boost by marking as write-combined if the CPU only writes to the memory once and then hands it off. This results in less cache being occupied with useless data and can be beneficial due to coalesced writes, but will result in horrifically slow CPU reads from the region.

I am suggesting that the author conflated "DMA allocation" with "write-combined allocation".

∇f(x_1) is the gradient of f evaluated at x_1, a point in R^N.

The first equation indicates that for any two points in R^N, the maximum norm of the difference in gradient is less than a constant times the distance between the points.

The keyword to google for is just "Lipschitz".

More like we got a space program from ICBMs.

Pretty sure OP meant five units of Alexa.

See section 17.5, "final Field Semantics" in http://docs.oracle.com/javase/specs/jls/se8/jls8.pdf.

Note that a String's value field is final.

The cycle length is 2^17-1 = 131071. The number of pixels is 320*200 = 64000. Therefore each pixel is hit at least once.

The authors likely used 17 bits instead of 16 because then the x and y coordinates can be obtained via masking rather than modulo (8 bits -> 256 values < 320 pixels).

Speed of light has units of distance per time. Expansion rate has units of (distance per time) per distance.

For more info on why this statement makes little sense, see Sean Carroll's post here: http://www.preposterousuniverse.com/blog/2015/10/13/the-univ...

> running at 700 GHz

Nice typo. That would be an effective heater.

> If it can’t do more than Moore’s Law...

Or rather, the GPU equivalent performance trend. Moore's law is long dead.

Maybe he means that that particular allocation is write-combined/uncached?

It is not clear why it would make any sense to bundle the TX1 with games.

It is a bit excessive to say that it is unrelated. Many of the techniques and methologies created for the 4004 were instrumental in the development the 8008. Also, the 4004, 8008, and 8080 were all designed by more or less the same people (esp. Faggin).

It's way easier to tell when looking at the 8008.

The 4004 has all kinds of strange instructions, like DAA (for BCD) and separate instructions for accessing main memory, ROM, and RAM. It's pretty clear that it was made to be in a calculator.

On the other hand, the 8008 has the familiar IN, OUT, MOV, PUSH, etc.

By manually moving the constants from .const to .data, I got this program:

       program main
       integer m,n

       call corrupt(7)

       write (*,*), 7
       stop
       end program main

       subroutine corrupt (a)
       integer a
       a = 4
       return
       end

to output 4. Thanks for pointing this out, 'concede_pluto. Pretty weird!

Could you be more specific? Fortran passes arguments by reference, but writing to an argument won't mess up the "program's only copy of 7".

For example, the first output of the following program is 4, but the second is still 7.

       program main
       integer m,n

       m = 7
       call corrupt(m)
       write (*,*) m

       n = 7
       write (*,*) n
       stop
       end program main

       subroutine corrupt (a)
       integer a
       a = 4
       return
       end

Interesting to note that Fourier's two works were published in 1807 and 1822, so that work by Gauss also predates Fourier.

In terms of distance, sure.

In terms of delta-v, the budget for the moon is upwards of 50% that for Mars.

EDIT: The 50% figure is from memory, and upon further reflection is probably not quite right, so take it with a grain of salt. I just wanted to point out that distance is not the only relevant metric.

Guy L. Steele.

https://www.cs.virginia.edu/~evans/cs655/readings/steele.pdf

I'll take a broad interpretation of 'CS' and throw out a couple of personal highlights.

C. Shannon, "A Symbolic Analysis of Relay and Switching Circuits" (1940): https://dspace.mit.edu/bitstream/handle/1721.1/11173/3454142...

Shannon's master's thesis, which introduces boolean algebra to the field of digital circuit design.

R.W. Hamming, "Error Detecting and Error Correcting Codes" (1950): https://ia801903.us.archive.org/1/items/bstj29-2-147/bstj29-...

In Hamming's own words: "Damn it, if the machine can detect an error, why can't it locate the position of the error and correct it?"

J.T. Kajiya, "The Rendering Equation" (1986): http://cseweb.ucsd.edu/~ravir/274/15/papers/p143-kajiya.pdf

Kajiya introduces the integral rendering equation, which is the basis for most current techniques of physically based rendering.

https://github.com/indirect links to http://arko.net/, which links to http://indirect.tumblr.com/.

> TODO - proper formatting for maths-y notation

Hmm

The author of that random blog is Sean Carroll, professor of physics at Caltech specializing in cosmology and GR.

That doesn't mean he must be right, but I feel pretty comfortable citing him.

You have some misunderstandings about the expansion of the universe. I would recommend reading http://www.preposterousuniverse.com/blog/2015/10/13/the-univ...

You don't need a pull up resistor to have a tri state bus.

Sorry to say it, but I got the impression that the author was unaware it was nonsensical, not that it was a clever motivation.

Why are pixels relevant to a discussion on computing power?