>This method depends on what’s called “referred sensation,” where stimulation of your body in one place gets felt in another place—it’s like when you accidentally bash your elbow against something but can feel tingling up through your fingers, because the signal has traveled along your nerves up through your hand. In some places, including in the fingers, referred sensation can be targeted with a reasonable amount of precision. With a signal electrode on the top of a finger and a ground electrode closer to the wrist, it’s possible to stimulate individual parts of each finger, creating 11 separately controllable tactile zones across five fingers and the palm.
>However, just zapping fingers doesn’t provide a way of getting those signals to show up just on the bottom (palmar) side of the fingers, rather than the top (dorsal) side, which is where the signal is originating. Fortunately, the asymmetrical way that the nerves in our hands are set up makes this possible. The backhanded stimulation technique works because your palm and finger pads are way, way more sensitive than the backs of your hands, thanks to about 60 times more mechanoreceptors on the palmar side. So, if you use an electrode to stimulate the back of one of your fingers, the sensitivity on the front is so much higher that you’re going to feel it there much more strongly, even though the electrode is in direct contact with the back side. The researchers were able to find a stimulation intensity that was enough to trigger nerves on the finger pads, while staying below the detection threshold on the back side of the fingers, neatly solving the problem.
Judging from the fact that RIM (the makers of the Blackberry line of devices) is shown to have 39% of the market in that chart, this must've been quite a while ago indeed.
>I actually wasn't watching that direction and Tessy (the name of my car) was on duty with autopilot engaged. I became aware of the danger when Tessy alerted me with the "immediately take over" warning chime and the car swerving to the right to avoid the side collision.
Combine this with the strange claim that Tesla put in their press release:
>Neither Autopilot nor the driver noticed the white side of the tractor trailer against a brightly lit sky, so the brake was not applied.
It's hard to see how one can miss a tractor trailer "against a brightly lit sky" when one is paying attention. The human visual system isn't that bad. A likelier explanation is that he just wasn't looking. :(
>Does a child need to look at billions of images to figure out what a chair or cat is?
Of course! Not exclusively images of cats or chairs, but children have absolutely seen billions of images by the time they start to exhibit discernibly human-level intelligence.
The right to encrypt really should be the modern equivalent of the RKBA. The parallels in regards to defending against tyrannical government are stark.
https://philosophy.williams.edu/files/Egan-Learning-to-Be-Me...