My Seattle Mazda was hit by this bug. The backup camera still functions for the most part, although it does flicker and occasionally blank for a second or two (presumably while the system reboots). Annoying, but not horrible.
Sure, that's why I didn't suggest that sitting in a dark room would be enough to dispel the theory. ("If this were true, then one could see during the night just as well as during the day, so Empedocles postulated an interaction between rays from the eyes and rays from a source such as the sun.")
I guess they could have argued that the rays of light returning from each object were perfect specular reflections that traveled directly back to the eyes that emitted them... but wow, that's still pretty hard to fathom, even for people who never heard of Occam's Razor.
X-ray lenses don't really exist, although you can produce focused beams (using either reflection or simply collimation). So, these methods typically involve scanning a sample and measuring some fluorescence line (which gets emitted in roughly all directions).
That site doesn't mention the spot size, but its likely much larger than the page thickness, so the iron signal from a tilted page probably wouldn't differ in a measurable way from having the page perpendicular to the beam. Keep in mind that they require ~24 hours to get even the images shown. Instead it sounds like they rely on compositional differences in the ink from the two sides and look at fluorescence from an element that is only present on one side.
It might be possible to get the other side by taking a difference between the Fe and Ca signals (after scaling appropriately).
Focusing x-rays is not impossible but very difficult. If you look at x-ray telescopes such as Chandra or XMM-Newton you'll notice they have extremely long, very high aspect ratio mirrors. This is because x-rays generally only reflect at grazing angles. At high enough energies you can use particle physics equipment because gamma rays will produce electron-positron pairs on impact (allowing you to then track their trajectories and work backwards to determine the direction of the gamma rays). Such equipment is enormously expensive and also very large so it's not particularly practical.
In the nexus presentation, they mentioned that a few symbol keys were moved up to soft keys to fit the keyboard while keeping a laptop-like distance between keys. So, it might not be super convenient, but you can likely still type your passwords.
If you treat the indices as between elements and include all elements that are between the start and end elements, there is only one reasonable choice. It would be more "special" to include elements that are outside of the specified range (i.e., the element to the right of the final index).
Yeah, but I think that orclev was saying that you have a rule at the beginning that the element to the right of the index is important and then in ranges, the element to the right of the index is know longer important.
One way or the other, someone needs to know the same number of rules in order to understand how the indices work.
