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Comment Re:SubjectsInCommentsAreStupid (Score 5, Interesting) 529

no serious scientific study has been able to establish that electrosensitivity exists How come nobody had the common courtesy of a "simple" double blind experiment?

It's ridiculous to think for even a second that this hasn't happened. Of course there are such studies.

The two key words here are 'serious'. -A qualifier which isn't applied to any study which doesn't support the party line.

No, it refers to controlled experiments run and managed in accordance with established best practice. On the other hand, you ARE guilty of dismissing studies based on conclusions, rather than methodology.

-And specifying "electrosensitivity". -Which means tests demonstrating, (for one example), that the blood/brain barrier becomes permeable under exposure to certain low-power frequencies, regardless of its repeatability or implications, is not relevant if the study doesn't specifically look at somebody claiming "electrosensitivity".

Some of the studies have focused on self-identified electrosensitives.

Now let me talk about MY electro-sensitivity. There is a high-voltage power line that crosses the motorway on the route between my childhood home and where my grandparents used to live. When we went under it, I used to get a funny feeling in the top of my head -- every time, without fail. So someone if my family (I can't remember who) suggested that I shut my eyes and tell them when I felt it. For a year or two, I kept opening my eyes too early and seeing the powerlines before we went under them. So one year I got determined to do it properly. I closed my eyes as soon as we reached the first bend on the motorway and kept them shut for ten minutes or more. No sensation. Ever since then, I have felt nothing whatsoever when passing under the lines. I couldn't even make myself conjure up or relive the sensation.

Comment Re:I prefer W3schools (Score 1) 39

Yes, but it gets messy and it's often beyond the creator's ability. There's lots of MOOCs out there full of ugly patched over words, or a subtitle annotation saying "Oops! I'm talking nonsense." Editing the videos would be easier if they had been planned and filmed in segments and edited tigether in the first place, but most of them just appear to be video-blogger style pieces to camera wie the visuals/slides/code-sessions recorded live with the content.

Comment Re:The courses shouldn't be designed for "best" (Score 1) 39

The courses shouldn't be designed for idealized setups like multiple monitors.

They're not -- they're just designed for a very specific course style: the one used in Andrew Ng's Machine Learning course. It works quite well for that partly because he's dealing with a complex subject that means students need a lot of input and explanation before attempting tasks, and partly because of Ng's exemplary skills as a lecturer.

Most programming courses, on the other hand, involve lots of tiny incremental tasks that need minimal explanation, followed by several practise tasks to internalise the logic. Programming MOOCs that I've tried tend to fall into one of two camps: either they give you lots and lots of input in the videos so that you end up forgetting it all before you get to the practise tasks, or they stop the video with a message telling you to go away and try out the exercise in another window and then come back. Neither of these are efficient workflows, but the main platforms in general, and Coursera in particular, all push things in that direction.

Comment I prefer W3schools (Score 1) 39

I'm not a huge fan of MOOCs, and prefer the model used by w3schools -- webpages with links to tasks in a live coding environment as a pop-up. I wouldn't mind videos being embedded into such pages where it makes sen to do so, but most MOOCs overuse and underprepare their videos.

When someone makes a written mistake in a slidecast/pencast-type video, there's no going back to correct it. To me that renders a lot of MOOCs frustratingly confusing. It also means that all their talk about gathering data "to improve the courses" is nonsense, because it means they've got no way to A/B test individual small changes to the course, so they have no proper comparisons whatsoever.

Comment Re:trick question (Score 1) 263

No, I'm pretty sure you're the only one with that particular brain issue.

The entire history of human semiotics is one of multiple redundancy. Look at numbers: one, two, three, four, five, six, seven, eight ... we still haven't repeated any vowel sounds, and we've had a fair mix of consonants too. The differences are bigger than necessary for conveying unique information, even taking into account every single part of information theory. why? Because the brain isn't pure maths, and redundant information can often speed things up as two inputs can reinforce each other.

Comment Re:Disappointing (Score 2) 104

When I started reading, I thought it might be about the way the manufacturers keep releasing new cards to rebalance the game. An episode of Extra Credits on YouTube talked about how they constantly fiddled with the game so that there was always a new potential super-tactic to learn, but after a while it would no longer be quite so super, hence the need yo keep playing and keep learning. The way the guy was waxing lyrical about it, I'm assuming no-one else has an algorithm anywhere near capable of copying them. If you made an AI that copied that part of what they do, there would be several major customers for it -- not just the niche card makers, but also the major MMO makers.

Comment Re:x86 (Score 1) 108

It's probably down to the way opcodes exploit common functionality between opcodes and use parts of the opcode to trigger certain logical blocks in the chip. That means a lot of the glue logic will have to be the same, if you want the chip to run efficiently.

Comment Re:Shouldn't this be obvious? (Score 1) 150

For my money he was "cheating" by not writing his own tests to begin with. His student merely used publicly available information to enhance their studying. It's not like they knew which of the 500 questions he was going to use on his 120 question test.

I agree completely - as I said, test banks are supposed to be databases of the teachers' own questions.

On a similar topic, I'm pretty appalled at the lack of time and attention given to numerical values in a lot of modern maths texts. My lecturers at uni always went out of their way to construct problems that has numbers manageable by mental arithmetic, right up to final step of solving for x -- and typically we weren't asked to do that final step. They took pride in making sure that the task tested our knowledge of specific mathematical concepts, and not on managing to keep all the significant digits throughout. No 3.753579x, but plenty of 5x/4 etc. This was questions just for their classes,mincluding test questions only ever answered by 50-150 students, and yet people writing books to be used by thousands of students across the world year after year can't be bothered to do it properly.

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