Traceroute vs Tracert

Van Jacobsen’s traceroute utility is not the same thing as Windows tracert, and the MS-Windows tool is probably more academically correct. The GNU version of traceroute that is included with most linux and BSD operating systems can do both kinds of tracing, but does the Van Jake by default (use traceroute -I to get the windows-style ICMP trace).

People have occasionally given routers silly names to produce amusing traces.

medieval news roundup

It’s a bit more javascript than necessary, but Medieval News delivers as promised.

I claim this desolate rock for the United States of America.

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I can have a page named NUL in linux, though.

Excellent article, but he forgot my favorite, CLOCK$. I used to have a web page with a big, shiny red button linked to <A HREF=”c:\clock$\clock$”> and the message “don’t click the button or your computer will be destroyed and all your files deleted”. It didn’t really do that, but it would instantly crash any Microsoft system prior to Win98SE or thereabouts. People did click on it, which still kind of amazes me.

Email a tree

The city of Melbourne gave their trees email addresses. People have been writing them love letters.

Finally got time to fix the blog.

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300 bottle rockets

From Colin Furze (previously linked for his pulse jets).

https://www.youtube.com/watch?v=yQf5cGPcP48

The Noggler

I am now the proud owner of the Steve Naugler Elec-Trak electric leafsucker version three. Heather says that’s too long of a name, so in Steve’s honor it ought to be called simply the Noggler. No word yet on what Steve thinks about that.

The original Elec-track E-Z Vac was a frankenstein from birth; Geo reports that it had a massive E12 drive motor attached to a blower and volute made by the E-Z Rake Corporation of Lebanon, Indiana. Thirty inch tall sheetmetal side panels and a cloth top were added to the sturdy Elec-trak dump cart to form the leaf bin, and two lengths of 6″ black plastic tubing connected the bin to the blower, which mounted on the rear stabbers, and the blower to a deck adapter that mounts on any side-output Elec-track mowing deck. The E-T dump cart itself was made by Ohio Steel Fabricators, who probably also made my Sears Craftsman cart of the same vintage.

Noggler

Steve kicked it up a notch, building this excellent contraption using the deck adapter from an Easy-Vac, the blower from an original Elec-trak E-Z Vac, and the cart from the largest Trac-Vac. It’s like a best of breed hybrid from every leaf sucker known to man. He found some fancy piping that is mostly clear, so you can see blockages without dismantling the thing, with a yellow spiral stripe that matched the original paint job of Steve’s E-15. The leaf bin’s top is steel screening rather than cloth, and it has a sort of hood at the front that prevents leaf debris from ending up in the tractor driver’s hair.

Steve’s sold his wooded property and divested himself of his Elec-Trak and attachments – but the Noggler lives on. I’m almost looking forward to leaf-fall this year.

ScienceNordic

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MS WCF (client) open-sourced

I don’t know if the world really needs another IPC mechanism, but there it is.

Who’s that knocking at my door?


I’ll kiss your cheeks and black your eyes!

RMS is online

Richard Stallman finally figured out a way to get online that was ideologically acceptable.

…he now connects to websites from his own computer – via Tor and using a free software browser. Previously, he used a complicated workaround to more or less email webpages to himself. The announcement brought a surprised gasp and a round of applause from the 300-plus attendees.

“At one point, I used to believe that the Firefox trademark license was incompatible with free software, I found out I was mistaken – it does allow the redistribution of unmodified copies,” he said.

Fearlessness is not Bravery

Bravery lies in conquering fear. Fearlessness is a disability, although it’s one you can often leverage to good effect. Total fearlessness is indistinguishable from utter stupidity.



“A lot of people think Mohawks aren’t afraid of heights; that’s not true. We have as much fear as the next guy. The difference is that we deal with it better. We also have the experience of the old timers to follow and the responsibility to lead the younger guys. There’s pride in ‘walking iron.’” —Kyle Karonhiaktatie Beauvais (Mohawk, Kahnawake)

Microsoft RDCman

Using Microsoft’s Remote Desktop Connection Manager 2.7, I can open 61 separate server consoles on a Dell Optiplex 390 with an i3 processor.

System performance outside of RDCman turns to treacle, but inside it the consoles are quite usable.

I had a bunch of PuTTY SSH windows open, and a fair number of tabs in firefox, too.

new discovery in science of blowing up stuff

Alkali metals can react explosively with ​water and it is textbook knowledge that this vigorous behaviour results from heat release, steam formation and ignition of the ​hydrogen gas that is produced. Here we suggest that the initial process enabling the alkali metal explosion in ​water is, however, of a completely different nature. High-speed camera imaging of liquid drops of a ​sodium/potassium alloy in ​water reveals submillisecond formation of metal spikes that protrude from the surface of the drop. Molecular dynamics simulations demonstrate that on immersion in ​water there is an almost immediate release of electrons from the metal surface. The system thus quickly reaches the Rayleigh instability limit, which leads to a ‘coulomb explosion’ of the alkali metal drop. Consequently, a new metal surface in contact with ​water is formed, which explains why the reaction does not become self-quenched by its products, but can rather lead to explosive behaviour.

water droplet included for comparison

2015 Bee Report

It’s not good news, but remember there are plenty of native pollinators, so we aren’t all going to die even if European honeybees go extinct.

I’d miss the honey, though.

Snouted Chickens

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Advice from the Buddha

This was said by the Blessed One, said by the Arahant, so I have heard: “Monks, one who has not fully known & fully understood conceit, whose mind has not been cleansed of it, has not abandoned it, is incapable of putting an end to stress. But one who has fully known & fully understood conceit, whose mind has been cleansed of it, has abandoned it, is capable of putting an end to stress.”

People are
   possessed by conceit
   tied up with conceit
   delighted with becoming.
Not comprehending conceit, they come to becoming again.
But those who, letting go of conceit,
are, in its destruction, released,
conquering the bond of conceit,
   go beyond
 all bonds.

As Mimi told me, “being focused is just remembering what you really want.”

Group dynamics and prototype theories of cognitive neuroscience

Humans are pack animals. They need to gather according to shared traits and then see an enemy of everyone who does not fit.

— Some geeky guy on Slashdot.

Computer scientists are taught classical categorization, which has little correspondence to how our brains actually categorize. The Aristotelian “necessary and sufficient” check-lists of traits, on which we’ve built giant monoliths of computer code (hello, Active Directory) and theory (hello, cladistic phylogeny) are something like the phlogiston theory; a bluntly workable model, that lets you get things done, but also fundamentally wrong, and thus a limitation on what can be understood and predicted.

Research that’s been ongoing since the 1960s or earlier, by people like Eleanor Rosch and Paul Kay, and later George Lakoff and Ronald Langacker, has provided significant amounts of data showing our brains do not assign people to us/them categories because they have a set of traits that we’ve understood and identified. In neurological reality, we assign people to categories based on how closely we think they resemble one or more prototypes, which might be real people (a group leader, typically) or an idealized belief or perception of how men and women should be. The prototype can be fixed (like, say, Jesus) or constantly changing (like, say, a political candidate).

There will always be someone in the group who least resembles the prototype, so there is always a scapegoat available if there’s not enough food or someone needs to take the blame for some unavoidable accident. There may also be anti-prototypes and whoever most resembles that person is less “in the group” than someone who is otherwise the same but lacks these correspondences with the anti-prototypes.

In a strange way this confirms one of Cipolla’s famous “basic laws of human stupidity“; since we’ve evolved a categorization method that mainly serves to quickly identify who gets thrown off the sled when the wolves are catching up, of course there will always be more than enough people to fill that role. If you need a scapegoat, you’ll always be able to identify someone as the stupid person responsible; our brains are biased to work that way.

Luke Wroblewski: Obvious always wins

Real data proving that UI design for function beats UI design for aesthetics. Well, for web and app designer aesthetics, anyway, which are trend-based and emotional rather than useful.

Audi e-Diesel

Audi and Sunfire have invented a robot plant. With a dumb name.

The Dresden energy technology corporation sunfire is Audi’s project partner and the plant operator. It operates according to the power‑to‑liquid (PtL) principle and uses green power to produce a liquid fuel. The only raw materials needed are water and carbon dioxide. The CO2 used is currently supplied by a biogas facility. In addition, initially a portion of the CO2 needed is extracted from the ambient air by means of direct air capturing, a technology of Audi’s Zurich‑based partner Climeworks.