Tag technology

Can’t Brain, I’ve Got The Old

So, I was sucked in by the headline on this Boston.com story about “Digital Dinosaurs”. I spend a lot of time helping elderly people with their computers and it has been a very educational and enlightening experience seeing how they do and do not interact with technology. But the “geezers” in this article are 40-somethings! MILFy suburban soccer moms! I’m trying to decide how the young-vs-old meme shifted this far south, especially since the population skews older and older every day, much to the delight of FOX News and the Tea Party. What happened to “60 is the new 40″? Having said that, my personal indignation notwithstanding, I realized that the notion that there are so many people in my own age group who are still very clueless about technology and the online world is actually pretty remarkable. I just don’t like the “too old to use Twitter” angle; it’s not about old at all, it’s about smart.

Then there was this blog post by a UX designer about an encounter he had with a 60-something man who had somehow never really used a computer, and what insights it gave the designer about how badly computer interfaces are designed. I found it via this MetaFilter post, which has an awful lot of “ha-ha old people and computers” comments, but I think a lot of those people missed the point of the article that the guy’s age wasn’t the factor in his difficulty, it was his lack of experience and no grasp of the context of 25 years of software development. He actually demonstrates a basic problem-solving ability that proves he has the smarts, he’s just presented with a totally foreign scenario. Even somebody much younger would have to scramble to develop a working process to accomplish a task in a totally unknown environment.

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Can It Be That It Was All So Simple Then?

Speaking to us from 1980, NBC News correspondent Fred Briggs tells us about The Amazing World Of Television in The Year 2000!

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How Useful Are You?

explanation cat

Do you consider yourself technologically knowledgeable? Well maybe you’re a modern-day wirehead, but how much do you know about the basics of modern technologies — engines, fluid dynamics, flight, etc.? Take this quiz and find out if you were stranded on a tropical island with six random associates if you would be the guy making radio transmitters out of coconuts and palm fronds or the guy who falls out of his hammock every night.

(I got 7 out of 10 correct, which earned me the qualification of “useful”. Hey, there has to be a first for everything, right?)

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The Machine That Goes PING!



“Ah, I see you’ve got the machine that goes PING!”
I came across this Flash presentation this morning: Auditory Warnings by sound artist John Wynne. It’s an interesting little discursion on the ubiquity of machines that go PING in our modern world and how we learn to live in an environment overloaded with various auditory notifications, many of which are not entirely appropriate to their context. You’ll want to have your speakers on for it. (also, check out the other online presentations at that site)

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You Never Hear The Bullet

You know how time seems to slow down to almost a dead stop when something unexpected happens? Well, that ain’t nothin’, pal.

This post at a blog called Sentient Developments compares the amount of time it takes for the various on-board anti-crash technologies in your car to react to and counteract a collision to the amount of time it takes the human brain to register that it is about to be involved in an accident.

Here’s the timeline of events, measured in milliseconds:

0 milliseconds – An external object touches the driver’s door.

1 ms – The car’s door pressure sensor detects a pressure wave.

2 ms – An acceleration sensor in the C-pillar behind the rear door also detects a crash event.

2.5 ms – A sensor in the car’s centre detects crash vibrations.

5 ms – Car’s crash computer checks for insignificant crash events, such as a shopping trolley impact or incidental contact. It is still working out the severity of the crash. Door intrusion structure begins to absorb energy.

6.5 ms – Door pressure sensor registers peak pressures.

7 ms – Crash computer confirms a serious crash and calculates its actions.

8 ms – Computer sends a “fire” signal to side airbag. Meanwhile, B-pillar begins to crumple inwards and energy begins to transfer into cross-car load path beneath the occupant. 8.5 ms – Side airbag system fires.

15 ms – Roof begins to absorb part of the impact. Airbag bursts through seat foam and begins to fill.

17 ms – Cross-car load path and structure under rear seat reach maximum load. Airbag covers occupant’s chest and begins to push the shoulder away from impact zone.

20 ms – Door and B-pillar begin to push on front seat. Airbag begins to push occupant’s chest away from the impact.

27 ms – Impact velocity has halved from 50 km/h to 23.5 km/h. A “pusher block” in the seat moves occupant’s pelvis away from impact zone. Airbag starts controlled deflation.

30 ms – The Falcon has absorbed all crash energy. Airbag remains in place. For a brief moment, occupant experiences maximum force equal to 12 times the force of gravity.

45 ms – Occupant and airbag move together with deforming side structure.

50 ms – Crash computer unlocks car’s doors. Passenger safety cell begins to rebound, pushing doors away from occupant.

70 ms – Airbag continues to deflate. Occupant moves back towards middle of car. Engineers classify crash as “complete”.

150-300 ms – Occupant becomes aware of collision. (emphasis mine – BK)

There is some debate as to that last mark, with some saying it can take as long as half a second (500 milliseconds) for the human brain to recognize what is happening. As some of the commenters there point out, though, your brain is likely to infer that an impact is imminent from other cues (namely seeing whatever you’re about to crash with coming straight at you) long before your brain begins to process the input from experiencing the crash. In the original example mentioned in the post, though (being shot in the head), a bullet does indeed move too fast for the human brain to perceive as it moves toward you. So maybe you’ll get lucky and be killed by a bullet someday!

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And It Was All “Bleep-Bloop-Bloop”, And I Was All “Whoa”

Eszter Hargittai is an assistant professor of communications studies and sociology at The Beloved Alma Mater, and she has done a survey of her undergrad students that concludes that the fine young men and women in college today aren’t as web-savvy as we all tend to assume.

She tells the Chronicle of Higher Education that many college freshmen lack a basic understanding of many concepts and the terminology associated with online activities, especially if they come from typically “disadvantaged” demographic groups. As a group, they lend far too much credence to information they find online; she specifically mentions the wide-eyed looks she gets when she tells them that Wikipedia is not authortiative. I also got a kick out of this quote:

How can you legitimately stand in front of a classroom when the students have an assumption that they know more about technology than you? At the beginning of my classes, I tell my students, “I know you don’t think I know as much as you because I’m older. I assure you, I know way more than you guys about this.” And they sort of smile, but by the end of the class they realize I’m right.

(The original paper is available here if you’re interested)

One reason they might not be as knoweldgeable about online technology and terminology is because they’re too freakin’ busy playing “Guitar Hero” all the time. Seriously, dude, go to class once in a while.

Hargittai has published a similar study looking at differences in self-assessment of technology skills between men and women (men and women are mostly equal skill-wise, but women underestimate their abilities), and has also written about social networking websites and search engines.

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