Dan Q found GC37D9X London Bridge

This checkin to GC37D9X London Bridge reflects a geocaching.com log entry. See more of Dan's cache logs.

Found with fleeblewidget on a day trip to London from Oxford. Finding was pretty easy – GPSr dropped us right on it and we spotted it immediately. Waiting for gaps in the human traffic, even on this rainy morning, during which to retrieve it was harder! TFTC.

Dan Q found GC13M78 From a Swan to the Canary: Tower – Save me!

This checkin to GC13M78 From a Swan to the Canary: Tower - Save me! reflects a geocaching.com log entry. See more of Dan's cache logs.

An easy find with fleeblewidget during a day trip to London from Oxford. Posed for a photo in front of the bridge to give us an excuse to mill around for a few minutes. Perhaps thanks to the rain there weren’t many tourists around, so we didn’t have to wait too long. TFTC!

Pay Up, Or We’ll Make Google Ban Your Ads

This is a repost promoting content originally published elsewhere. See more things Dan's reposted.

A new email-based extortion scheme apparently is making the rounds, targeting Web site owners serving banner ads through Google’s AdSense program. In this scam, the fraudsters demand bitcoin in exchange for a promise not to flood the publisher’s ads with so much bot and junk traffic that Google’s automated anti-fraud systems suspend the user’s AdSense account for suspicious traffic.

The shape of our digital world grows increasingly strange. As anti-DoS techniques grow better and more and more uptime-critical websites hide behind edge caches, zombie network operators remain one step ahead and find new and imaginative ways to extort money from their victims. In this new attack, the criminal demands payment (in cryptocurrency) under threat that, if it’s not delivered, they’ll unleash an army of bots to act like the victim trying to scam their advertising network, thereby getting the victim’s site demonetised.

Note #16758

Today my #distributed #remotework office is provided by @OCFI_OI, which provides me that most #Oxford of views: simultaneously containing architecture of the 1960s… and the 1160s.

View of 1960s buildings in front of Oxford Castle.

×

Who finished second?

This is a repost promoting content originally published elsewhere. See more things Dan's reposted.

Three athletes (and only three athletes) participate in a series of track and field events. Points are awarded for 1st, 2nd, and 3rd place in each event (the same points for each event, i.e. 1st always gets “x” points, 2nd always gets “y” points, 3rd always gets “z” points), with x > y > z > 0, and all point values being integers.
The athletes are named: Adam, Bob, and Charlie.

  • Adam finished first overall with 22 points.
  • Bob won the Javelin event and finished with 9 points overall.
  • Charlie also finished with 9 points overall.

Question: Who finished second in the 100-meter dash (and why)?

I enjoyed this puzzle so much that I shared it with (and discussed it at length with) my smartypants puzzle-sharing group. Now it’s your turn. The answer, plus a full explanation, can be found on the other side of the link, but I’d recommend that you try to solve it yourself first. If it seems impossible at first glance, start by breaking it down into what you can know, and what you can almost know, and work from there. Good luck!

And if anybody feels like hiring Nick to come and speak anywhere near where I am, that’d be awesome of you.

Old CSS, new CSS

This is a repost promoting content originally published elsewhere. See more things Dan's reposted.

I first got into web design/development in the late 90s, and only as I type this sentence do I realize how long ago that was.

And boy, it was horrendous. I mean, being able to make stuff and put it online where other people could see it was pretty slick, but we did not have very much to work with.

I’ve been taking for granted that most folks doing web stuff still remember those days, or at least the decade that followed, but I think that assumption might be a wee bit out of date. Some time ago I encountered a tweet marvelling at what we had to do without border-radius. I still remember waiting with bated breath for it to be unprefixed!

But then, I suspect I also know a number of folks who only tried web design in the old days, and assume nothing about it has changed since.

I’m here to tell all of you to get off my lawn. Here’s a history of CSS and web design, as I remember it.


(Please bear in mind that this post is a fine blend of memory and research, so I can’t guarantee any of it is actually correct, especially the bits about causality. You may want to try the W3C’s history of CSS, which is considerably shorter, has a better chance of matching reality, and contains significantly less swearing.)

(Also, this would benefit greatly from more diagrams, but it took long enough just to write.)

I too remember the bad-old days of the pre-CSS and early-CSS Web. Back then, when we were developing for it, we thought that it was magical. We tolerated issues like having to copy-paste our navigation around a stack of static pages, manually change our design all over the place etc…. but man… I wouldn’t want to go back to working that way!

This is an excellent long-read for an up-close-and-personal look at how CSS has changed over the decades. Well worth a look if you’ve any interest in the topic.

Boneworks

This is a repost promoting content originally published elsewhere. See more things Dan's reposted.

I know only a small percentage of you use VR and to everyone else I might as well by telling you how spiffy the handrails are up in this ivory tower, but for what it’s worth, Boneworks is the first game in a while to make me think VR might be getting somewhere. It’s not there yet. The physics is full of little niggles as you might expect from a game trying to juggle so much. The major issue with the climbing is only your hands and head can be moved and your in-game legs just flop around getting in the way of things like two stubborn trails of cum dangling off your mum’s chin, but forget all that.

Speaking of VR, Yahtzee’s still playing with it and thinks it’s improving, which is high praise. So there’s hope yet.

I really need to dig my heavyweight gear out of the attic, but I’m waiting until we (eventually) move house. And I absolutely agree with Yahtzee’s observation about the value of VR games in which you can sit down, sometimes.

Difference Between VR and AR

This weekend, my sister Sarah challenged me to define the difference between Virtual Reality and Augmented Reality. And the more I talked about the differences between them, the more I realised that I don’t have a concrete definition, and I don’t think that anybody else does either.

A man wearing a VR headset while writing on a whiteboard.
AR: the man sees simulated reality and, probably, the whiteboard.
VR: the man sees simulated reality only, which may or may not include a whiteboard.
Either way: what the hell is he doing?

After all: from a technical perspective, any fully-immersive AR system – for example a hypothetical future version of the Microsoft Hololens that solves the current edition’s FOV problems – exists in a theoretical superset of any current-generation VR system. That AR augments the reality you can genuinely see, rather than replacing it entirely, becomes irrelevant if that AR system could superimpose a virtual environment covering your entire view. So the argument that compared to VR, AR only covers part of your vision is not a reliable definition of the difference.

Spectrum showing AR view of the Louvre on the left (with 5% of the view occluded by UI) and VR view of a 3D model of the Louvre on the right (with 100% of the view occluded). The middle of the spectrum remains undefined.
The difference by how much of your view is occluded by machine-generated images fails to define where the boundary between AR and VR lies. 5%? 50%? 99%?

This isn’t a new conundrum. Way back in 1994 back when the Sega VR-1 was our idea of cutting edge, Milgram et al. developed a series of metaphorical spectra to describe the relationship between different kinds of “mixed reality” systems. The core difference, they argue, is whether or not the computer-generated content represents a “world” in itself (VR) is just an “overlay” (AR).

But that’s unsatisfying for the same reason as above. The HTC Vive headset can be configured to use its front-facing camera(s) to fade seamlessly from the game world to the real world as the player gets close to the boundaries of their play space. This is a safety feature, but it doesn’t have to be: there’s no reason that a HTC Vive couldn’t be adapted to function as what Milgram would describe as a “class 4” device, which is functionally the same as a headset-mounted AR device. So what’s the difference?

You might argue that the difference between AR and VR is content-based: that is, it’s the thing that you’re expected to focus on that dictates which is which. If you’re expected to look at the “real world”, it’s an augmentation, and if not then it’s a virtualisation. But that approach fails to describe Google’s tech demo of putting artefacts in your living room via augmented reality (which I’ve written about before), because your focus is expected to be on the artefact rather than the “real world” around it. The real world only exists to help with the interpretation of scale: it’s not what the experience is about and your countertop is as valid a real world target as the Louvre: Google doesn’t care.

Milgram et al. (1994)'s Table 1: Some major differences between classes of Mixed Reality (MR) displays, showing seven classes: 1. monitor-based video with CG overlays, 2. headset-based video with CG overlays, 3. headset-based see-through display with CG overlays, 4. headset-based see-through video with CG overlays, 5. monitor/CG world with video overlays, 6. headset-based CG world with video overlays, and 7. CG-based world with real object intervention.
Categories 3 and 4 would probably be used to describe most contemporary AR; categories 6 and 7 to describe contemporary VR.

Many researchers echo Milgram’s idea that what turns AR into VR is when the computer-generated content completely covers your vision.

But even if we accept this explanation, the definition gets muddied by the wider field of “extended reality” (XR). Originally an umbrella term to cover both AR and VR (and “MR“, if you believe that’s a separate and independent thing), XR gets used to describe interactive experiences that cover other senses, too. If I play a VR game with real-world “props” that I can pick up and move around, but that appear differently in my vision, am I not “augmenting” reality? Is my experience, therefore, more or less “VR” than if the interactive objects exist only on my screen? What about if – as in a recent VR escape room I attended – the experience is enhanced by fans to simulate the movement of air around you? What about smell? (You know already that somebody’s working on bridging virtual reality with Smell-O-Vision.)

Dan and Robin concluding a VR Escape Room.
Not sure if you’re real or if you’re dreaming? Don’t ask an XR researcher; they don’t know either.

Increasingly, then, I’m beginning to feel that XR itself is a spectrum, and a pretty woolly one. Just as it’s hard to specify in a concrete way where the boundary exists between being asleep and being awake, it’s hard to mark where “our” reality gives way to the virtual and vice-versa.

It’s based upon the addition of information to our senses, by a computer, and there can be more (as in fully-immersive VR) or less (as in the subtle application of AR) of it… but the edges are very fuzzy. I guess that the spectrum of the visual experience of XR might look a little like this:

Comic showing different levels of "XR-ness", from the most to the least: The Matrix has you now, fully immersive VR, headset AR, "Magic Window" AR, conventional videogaming, HUDs, using google maps while walking, imagining playing Tetris, reality.

Honestly, I don’t know any more. But I don’t think my sister does either.

× × × × ×

Geohashing expedition 2020-02-22 53 -1

This checkin to geohash 2020-02-22 53 -1 reflects a geohashing expedition. See more of Dan's hash logs.

Location

Northern slopes of Haven Hill, near Bradbourne. (South end of the Peak District, North of Ashbourne.)

Participants

Plans

I’ll be travelling North through England all day on 2020-02-22 and it’s not a huge diversion to go and climb a hill as a break, so long as I set off early enough in the morning. We’ll see…

Expedition

It’s a beautiful part of the world, the Peak District, although I could have picked a day when I’d be less-hampered by floods and wind. Nonetheless, I was able to climb a short way up Haven Hill, divert around an impromptu lake, and scramble into a thicket in order to reach the hashpoint at around 13:40. And to leave a “the Internet was here” sign at the nearest footpath

Tracklog

  • Taken by GPSr, but I seem to have lost the charging/data cable for it. Will find at some point.

Video

You can also watch it at:

Photos

Dan grinning holding a GPSr showing that he's at the hashpoint
Proof and a silly grin together!
×

Dan Q found GC6436N I can see the helipad from up here

This checkin to GC6436N I can see the helipad from up here reflects a geocaching.com log entry. See more of Dan's cache logs.

I’m travelling today from Oxford to Preston with a diversion to see if I can make it to the 2022-02-22 53 – 1 geohashpoint, which looks likely to be on a hill at the South end of the Peak District. Pulled over here to check my directions and buy myself a snack and find this cache. Ascent up the roundabout was a little slippy and muddy but I was soon able to find the cache. SL, TFTC!

Geohashing expedition 2020-02-21 51 -1

This checkin to geohash 2020-02-21 51 -1 reflects a geohashing expedition. See more of Dan's hash logs.

Location

North end of the village of Curbridge in Oxfordshire. Street View and satellite photography shows it as being alongside a nondescript road, but I’m aware that there’s a housing estate under construction nearby and there’s a new roundabout which appears on maps but not on satellite views which was constructed nearby last year: I’m hoping that the location is still accessible.

Participants

Plans

I don’t know whether I’ll be able to make it to this hashpoint; it depends on how work goes as well as the weather (while I’m not directly in the path of Storm Dennis I’m still in an area that’s getting lots of wind and rain). I’m not committed yet to whether I’d drive or cycle: it depends on how long I can spare, whether the car’s available for my use, and – again – the weather (I’d prefer to cycle, but I’m not going to do it if it means I get completely soaked on my lunch break).

Okay: I need to vacate my house anyway because some estate agents are bring some potential buyers around, so I’m setting out to the hashpoint now (12:20) after which I’ll aim to work in a coworking space for the afternoon. Wish me luck!

Expedition

I drove out to the village of Curbridge and parked in a lane, then walked to the hashpoint, arriving about 13:05. Conveniently there’s a pole (holding a speed detecting sign) within a metre of the hashpoint so I was able to attach a “The Internet Was Here” sign in accordance with the tradition. Then I made my way to a coworking space half a mile to the North to carry on with my day’s work.

Tracklog

My GPSr keeps a tracklog:

  • Obtained, but I didn’t bring the right cable to the coworking space so I can’t get it yet. [to follow]

Video

You can also watch it at:

Photos

Wacom drawing tablets track the name of every application that you open

This is a repost promoting content originally published elsewhere. See more things Dan's reposted.

I don’t care whether anything materially bad will or won’t happen as a consequence of Wacom taking this data from me. I simply resent the fact that they’re doing it.

The second is that we can also come up with scenarios that involve real harms. Maybe the very existence of a program is secret or sensitive information. What if a Wacom employee suddenly starts seeing entries spring up for “Half Life 3 Test Build”? Obviously I don’t care about the secrecy of Valve’s new games, but I assume that Valve does.

We can get more subtle. I personally use Google Analytics to track visitors to my website. I do feel bad about this, but I’ve got to get my self-esteem from somewhere. Google Analytics has a “User Explorer” tool, in which you can zoom in on the activity of a specific user. Suppose that someone at Wacom “fingerprints” a target person that they knew in real life by seeing that this person uses a very particular combination of applications. The Wacom employee then uses this fingerprint to find the person in the “User Explorer” tool. Finally the Wacom employee sees that their target also uses “LivingWith: Cancer Support”.

Remember, this information is coming from a device that is essentially a mouse.

Interesting deep-dive investigation into the (immoral, grey-area illegal) data mining being done by Wacom when you install the drivers for their tablets. Horrifying, but you’ve got to remember that Wacom are unlikely to be a unique case. I had a falling out with Razer the other year when they started bundling spyware into the drivers for their keyboards and locking-out existing and new customers from advanced features unless they consented to data harvesting.

I’m becoming increasingly concerned by the normalisation of surveillance capitalism: between modern peripherals and the Internet of Things, we’re “willingly” surrendering more of our personal lives than ever before. If you haven’t seen it, I’d also thoroughly recommend Data, the latest video from Philosophy Tube (of which I’ve sung the praises before).

Why Aren’t Jehovah’s Witnesses Vegetarian?

I was visited this morning by a pair of Jehovah’s Witnesses, doing the door-to-door ministry for which they’re most-famous, and I was reminded of an interesting quirk in the practices of the WTS. If you know anything at all about their beliefs, you’re probably aware that Jehovah’s Witnesses generally refuse blood transfusions.

A candle being lit.
Commenting on religions while belonging to none of them? That’s me. I don’t see this as a problem; I almost see it as an advantage. I couldn’t find a picture to express that, though, so you get this one.

I first became aware of their policy of rejecting potentially life-saving blood when I was just a child. A school friend of mine (this one!), following a problematic tonsillectomy, found his life at risk because of his family’s commitment to this religious principle. Because I’ve always been interested in religion and the diversity of theological difference I ended up looking into the background of their practice… and I came to a very different scriptural interpretation.

Annotated bible.
Nowadays, the Jehovah’s Witnesses use their own translation, the New World Bible. I don’t have a copy, but I’m choosing to ignore it because the relevant prohibitions predate its publication anyway.

First, it’s worth understanding that Jehovah’s Witnesses aren’t opposed to most medical care, unlike for example the Church of Christian Scientists who eschew basically all medical science in favour of prayer (eww). No: Jehovah’s Witnesses specifically single out blood transfusions as prohibited (they’ve flip-flopped on a few other treatments) which, when you think about it, is pretty weird.

Dan with a copy of Awake!, wearing his WordPress Diversity t-shirt.
I hadn’t noticed until after my visitors left that I’d answered the door wearing a pride flag on my t-shirt. (Their opinion on queerness is wrong about for moral, rather than scriptural, reasons.)

The biblical basis for this prohibition comes from Leviticus 17:12-14, Acts 15:19, Acts 21:25, and – crucially, because it predates and almost-certainly informs them – Genesis 9:3-4, which reads (NIV):

Everything that lives and moves about will be food for you. Just as I gave you the green plants, I now give you everything. But you must not eat meat that has its lifeblood still in it.

This is God speaking to Noah, by the way. Sexacentenarian Noah’s took a six-week cruise on a floating zoo and God’s just said “boat number 1, your time is up… and by Me you’d better be horny ‘cos it’s time to go forth and multiply.” God invents the rainbow as a promise not to reformat-and-reinstall again, and then follows it up with a handful of rules because He’s a big fan of rules. And even though blood transfusions wouldn’t be invented for thousands of years, the Jehovah’s Witnesses almost-uniquely feel that this prohibition on consuming blood covers transfusions too.

That all sounds fair enough. I mean, it requires a pretty heavy-handed interpretation of what was meant but that’s par for the course for the Bible and especially the Old Testament.

Diagram showing how the presumed Priestly, Elohist, and Jahwist influenced Genesis as it appears in the Torah (the Deuteronomist source is ignored since it doesn't contribute to Genesis).
The genesis of Genesis. You can quickly find your way into a rabbit hole of these kinds of diagrams if you’re silly enough to ask questions like “but what’s the original translation?”

But let’s take a step back. Here’s those verses again, this time in Hebrew:

כָּל־רֶ֙מֶשׂ֙ אֲשֶׁ֣ר הוּא־חַ֔י לָכֶ֥ם יִהְיֶ֖ה לְאָכְלָ֑ה כְּיֶ֣רֶק עֵ֔שֶׂב נָתַ֥תִּי לָכֶ֖ם אֶת־כֹּֽל׃

אַךְ־בָּשָׂ֕ר בְּנַפְשׁ֥וֹ דָמ֖וֹ לֹ֥א תֹאכֵֽלוּ׃

A modern translation would be:

Every moving living thing is your food, like the plants you were already given. But you may not eat any creature that is still alive.

“Still alive?” That’s a very different way of reading it, right? Suddenly this strange verse about abstaining from, I don’t know, black pudding (and possibly blood transfusions) becomes a requirement to kill your dinner before you chow down.

This is like Deuteronomy 14:21, where it says “Do not cook a young goat in its mother’s milk.” The same directive appears in Exodus 34:26 but I prefer Deuteronomy’s because it also has this really surreal bit about how it’s not okay to eat roadkill but you can serve it to your immigrant friends. It turns out that kid-boiled-in-mother’s-milk was an old Canaan recipe and pagan tribes used to eat it ritualistically, so a prohibition on the practice by Noah and his descendants was not only an opposition to animal cruelty but a statement against polytheism.

Two young goats talking. One observes that their mother is being milked. The other asks what's for dinner.
“Kids! It’s dinnertime!”

Could “eating things alive”, which is specifically forbidden in Judaism, be – like goat-in-goat-juice – another pagan ritual, formerly widespread, that the early Israelites were trying to outlaw? Quite possibly.

But there’s a further possible interpretation that I feel is worth looking at. Let’s paint a picture. Again, let’s assume despite the mountains of evidence to the contrary that the bible is literally true, which meets people who use the covenant of Genesis as a basis for medical decisions much more than half-way:

God’s just declared bankruptcy on his first “Earth” project and wiped the slate clean. He’s had the RNG – I’m assuming that God plays dice – roll up a new landmass, and he’s populated it with one family of humans, plus two of every kind of land animal. Possibly more of the fast breeders like the insects and some of the small mammals, I suppose, depending on how closely they were housed in the ark. Don’t make me explain this to you.

Noah's Ark (1846), by Edward Hicks
Shem: “What do you want for lunch?”
Japheth: “Ham.”
Ham: “Gulp.”
Japheth: “No, I mean a pig.”
Ham: “We’ve only got two left. Let’s just smoke some kush instead; God gave dad all the plants.”
Cush: “Did somebody say my name?”

Let’s assume that God doesn’t want the disembarking humans to immediately eat all of the animals with no concern for sustainability. This is, of course, absolutely what we humans do: if we take a biblical-literalism viewpoint, it’s a miracle that the delicious dodo would last until the 17th century CE rather than being eaten on the first post-flood day. God’s sort-of promised that the humans will be allowed to eat almost anything they like and that He’ll stop meddling, but He doesn’t want a mass-extinction, so what does He do? He says:

You can eat all the plants you want. But don’t eat any of the animals that are alive right now: let them breed a bit first.

This has always seemed to me to be the obvious way to interpret the commandment not to eat living animals: don’t eat the ones that are living at the moment. Certainly more-rational than “don’t have blood transfusions.” And if what God (allegedly) said to Noah is to be treated as a rule that still stands today, rather than just at the time, then perhaps it’s vegetarianism for which Jehovah’s Witnesses should best be known. That way, they’d get to argue with the hosts of barbecues about what goes into their bodies rather than with judges about what goes into their childrens’.

But try telling them that. (Seriously: give it a go! They’re usually more than happy to talk about scripture, even if you’re a little bit sarcastic!)

× × × × × ×