One year prior to Anthony's excavation, Adam Banks wrote for Ars about the benefits of adopting cloud-based tools for enterprise resource planning (ERP). You adopt a cloud-based business management software to go "Beyond Excel." "If PowerPoint is the universal language businesses use to talk to one another, their internal monologue is Excel," Banks wrote. The issue is that all the systems and processes a business touches are complex and generate all kinds of data, but Excel is totally cool with taking in all of it. Or at least 1,048,576 rows of it.
Banks cited Tim Worstall's 2013 contention that Excel could be "the most dangerous software on the planet." Back then, international investment bankers were found manually copying and pasting Excel between Excel sheets to do their work, and it raised alarm.
But spreadsheets continue to show up where they ought not. Spreadsheet errors in recent years have led to police doxxing, false trainee test failures, an accidental $10 million crypto transfer, and bank shares sold at sorely undervalued prices. Spreadsheets are sometimes called the "dark matter" of large organizations, being ever-present and far too relied upon despite 90 percent of larger sheets being likely to have a major error.
So, Excel sheets catch a lot of blame, even if they're just a symptom of a larger issue. Still, it's good to see one no longer connected to the safety of a human heading into a turn at more than 200 miles per hour.
This is a full posting of the short story by Arthur C. Clarke. It is titled “Superiority”. “Superiority” is a science fiction short story by Arthur C. Clarke, first published in 1951. It depicts an arms race, and shows how the side which is more technologically advanced can be defeated, despite its apparent superiority, because of its own organizational flaws and its willingness to discard old technology without having fully perfected the new.
Evil AuditorSilver badge
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Re: Needless!!
jmch: I would have thought...
Exactly, you would have thought. And hence you wouldn't have moved the rack in the first place.
2 months
John Sager
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Yes, another example of Chesterton's Fence.
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BebuSilver badge
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Big Brother
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《Yes, another example of Chesterton's Fence.》
Or in Terry Pratchett's canine latin of Discworld
"Si non confectus, non reficiat" - family motto of the Vetinari.
《standardized perfection》
Any useful standard ought to be prefaced with the Patrician's motto.
When you think about the essential (and insane) concept of perfection anything, process or system etc once it obtains perfection must necessarily be unique to the particular instance which I would think is the antithesis of standard(ized.)
Standardization is formalizing the art of the possible not aspiration to perfection. Engineering v Theology. :)
Antoine St Exupery probably had the most sensible approach to perfection:
"Il semble que la perfection soit atteinte non quand il n'y a plus rien à ajouter, mais quand il n'y a plus rien à retrancher." -Terre des Hommes, 1939.
Here, in the extreme, perfection would be the complete absence of anything - the (philosophical) void (sans vacuum fluctuations.) He was more practically claiming a minimalist approach to design would be more likely to lead in the direction of perfection.
Tucker Carlson detailed a “classified briefing” that took place Tuesday with officials from the Department of Justice in attendance, as well as Ocasio-Cortez.
“In a classified briefing this afternoon, attended by officials from the Biden Justice Department, Alexandria Ocasio-Cortez claimed that Elon committed ‘election interference’ in 2022 by ‘changing the algorithms’ on X to alter the results of the midterms that year,” Carlson posted on X.
X CEO Elon Musk, who purchased Twitter in 2022 after the satirical website The Babylon Bee had its account suspended for months, responded to the post, saying “Actually, I made the algorithm open source and neutral to all parties, but of course that is ‘election interference’ by her standards.”
AOC’s ire is misdirected. It’s not like Musk suppressed a bombshell report weeks before the 2020 election or shut down the Twitter accounts of journalists and White House officials who posted the story. But she’s right that the people who did that — and who have weaponized Big Tech algorithms in a host of other ways to control discourse — are guilty of “election interference.”
As shown in the below picture, the CAN bus level typically ranges (Common-Mode-Voltage = 0V) between 1.5 (CAN_L during dominant bit) and 3.5 Volts (CAN_H during dominant bit). However, the actual signal status, recessive or dominant, is based on the differential voltage Vdiff between CAN_H and CAN_L.
SAE J1939 Quick Reference
- Higher-Layer Protocol using CAN as the physical layer
- Shielded twisted pair wire
- Max. network length of 40 meters (~120 ft.)
- Standard baud rate of 250 kBit/sec
- Max. 30 nodes (ECUs) in a network
- Max. 253 controller applications (CA) where one ECU can manage several CAs
- Peer-to-peer and broadcast communication
- Support for message length up to 1785 bytes
- Definition of Parameter Groups (Predefined vehicle parameters)
- Network Management[1] (includes address claiming procedure.
It must be emphasized that the maximum network length of 40 m (roughly 120 ft.), the baud rate of 250 kBit/sec and the maximum number of nodes (30) are self-inflicted restrictions by the SAE, most probably with the intention to keep everything on the extreme safe side and thus trying to prevent potential runtime problems.
In all consequence, the network length at 250 kBit/sec, according to ISO 11898, is 250 m (roughly 750 ft).
In this guide we introduce the J1939 protocol basics incl. PGNs and SPNs.
Note: This is a practical intro so you will also learn how to decode J1939 data via DBC files, how J1939 logging works, key use cases and practical tips.
Learn below why this has become the #1 introduction to J1939.
You can also watch our J1939 intro above - or get the PDF
Who would win: the world's fastest computer circa 1976, or a $35 single-board computer from 2012? //
"In 1978, the Cray-1 supercomputer cost $7 million, weighed 10,500 pounds and had a 115 kilowatt power supply. It was, by far, the fastest computer in the world," Longbottom writes of the device, designed as the flagship product of Seymour Cray's high-performance computing company. "The Raspberry Pi costs around $70 (CPU board, case, power supply, SD Card), weighs a few ounces, uses a five watt power supply and is more than 4.5 times faster than the Cray 1." //
The same benchmark tests show even bigger gains for newer devices in the Raspberry Pi family, as you'd expect: the Raspberry Pi 400, the newest device in Longbottom's performance table, showed a performance gain of up to 95.5 times the Cray-1's results — in a device which fits on the palm of your hand, rather than becoming a very expensive piece of uncomfortable office furniture.
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