Hololens is not VR
Indeed. AR doesn't seem to trigger the same motion sickness responses as VR, because you retain all of the visual cues from the real world.
Microsoft is once again creating a product that nobody will use.
Microsoft has created a technology that anyone can use without feeling motion sick, but you think that it will lose in the marketplace to one that about 80% of people can use without feeling motion sick? That's an interesting perspective.
It's not so clear with 3D. It's something of a misnomer to call current displays 2D and this kind of VR interface 3D. Both provide a subset of the dozen or so cues that the human brain uses to turn inputs into a 3D mental model. They both, for example, manage occlusion and distance blurring, but neither manages (yet) to correctly adjust the focal depth of parts of the image that are further away. Motion sickness is caused by disagreements between some of these cues and between the other cues that you use to build your mental model of the world. VR adjusts the image based on your head position (though latency here can cause problems as the visual signal and the inner ear signal come at different times), but it turns out that humans have a very strong notion of body image, so if they don't correctly track your arm positions and update them in the game then this causes nausea in a lot of people.
Unfortunately for the 3D film and game industry, it's not the case that simply adding more cues reduces the risk of motion sickness. It turns out that a third-person perspective on a 2D display is one of the minima for the percentage of the population to experience motion sickness. Move to first person, and this gets worse, though it's still a tiny percentage (some people can't play FPS games for more than a few minutes without feeling sick). Add a few more visual cues and you get a lot more people feeling sick. There's obviously a minimum when you get all of the cues right, because otherwise people would spend their entire lives experiencing motion sickness, but so far none of the mainstream 3D systems have found another point that's close to the 2D display. If you're going to develop a first-person game, and you can either develop it for a technology that 99% of humans can use without feeling sick, or spending more money to develop it for a technology that 80% can use, which would you do?
const char s = "hello world";
This will copy the contents of the string literal into a mutable array. If you write this at the global scope, the copy will be done at compile time, so you'll end up with the string in the data section, not the rodata section (if you do it in a variable with automatic storage, you'll get a copy every time the variable comes into scope). Putting constant strings in the rodata section is important for optimisation, because it allows them to be coalesced. If you write "hello world" in two place, then you'll end up with a single string in the rodata section. With some linkers, if you also write "world" somewhere else, then you'll just get two pointers into the same string (this is also one of the reasons that C uses null-terminated strings: you can't do this with Pascal strings, and it saved a useful amount of memory on the PDP-11). Once you're sharing the string, it becomes a really bad idea to allow someone to modify it, because that modification will then become visible in a different bit of code.
Teaching critical thinking in school can't stand up to the power of indoctrination by Mom, Dad, and God at home. Religious parents actively work to ensure that their children see them (and the church) as the only authoritative source of truth.
Way to paint with a broad brush. Catholic schools are full of the children of religious parents, and the instructors are usually priests and nuns. The nuns will kick your damned ass if you're intellectually lazy. Whenever I reflect on my education, I always thank Sister Catherine Joseph, one of my 6th grade teachers. She was a mean woman, and I hated her guts, but she was one of the best teachers I've ever known. She taught two subjects: Science and Religion, and she taught both of them rigorously, and well.
Never underestimate someone who believes they have been commanded by god to turn your child into a thinking, reasoning, well educated member of society.
"nothing that you will learn in the course of your studies will be of the slightest use to you in after life â" save only this â" that if you work hard and intelligently you should be able to detect when a man is talking rot, and that, in my view is the main, if not the sole purpose of education"
Get your code into the SIM firmware and you have just bypassed a lot of security
The rest of your post is correct, but it's more true to say that if you get your code into the SIM firmware then you've bypassed a small amount of quite weak encryption.
We will have solar energy as soon as the utility companies solve one technical problem -- how to run a sunbeam through a meter.