3,025 karma · joined August 31, 2018
It's possible that you haven't actually seen a real hologram. It's quite impressive. The ones I have seen are 3-dimensional objects in the air in front of you, and you can walk around it, typically not the full 360 degrees, but it's just.. there. It's nothing at all like what we normally call a "display".
But not sight-read when playing an actual instrument.
Anyway, that problem is long gone.
It's also useful in that you can pre-order a Shinkansen ticket, for example, and link that purchase to your Suica card, which you then use for the Shinkansen gate. If there are other fees (which there may be) they're just deducted from the money the card holds, as usual. Makes everything very simple.
For me a physical card is easier than using a phone. A phone is so much larger so I would need to get it from a pocket somewhere, while the Suica card I can keep in my jeans pocket or some other easy place.
Zigbee is basically the same everywhere, however the 2.4GHz band is of course somewhat congested.
And when I've tried navigating in large cities (Tokyo included) and found that my stupid tablet's GPS relied on getting the ephemeris data from the internet, and never through the GPS itself, I couldn't start navigating until I connected to something.. and I spent hours trying to find an open network, unsuccessfully. Happened twice, the second time in Nagoya. No open networks. Well, Starbucks have that, but then you need to find one.
I got myself a normal, non-smart Philips 49" TV some ten years ago, it's good, but I don't expect to be able to find something similar anymore.
(This applies a bit less to military engines though, where performance is a more important factor. Fuel efficiency is still important though)
But I think I lost the ability to hear the flyback not long after I passed twenty. The world turned silent as far as that's concerned (before, you could hear it anywhere and everywhere, in shops, homes, some workplaces..)
The "20kHz" thing is kind of a myth for most people, at least that's what it looked to me after all the testing we did at school. I think it can influence what you hear, somehow, but in any case it's for very young people.
> Most people have no idea how much their high frequency hearing degrades as they age because it plays approximately no role in your life, but it's real, dramatic, and as far as I know happens to everyone.
I agree completely. I recall some discussions a long time ago on RMMGA (Usenet: rec.music.makers.guitar.acoustic) where some distinguished and experienced, but middle-aged guitarists got practically angry when a young guy described the sound of a certain type of newly-introduced strings "harsh" and "like fingernails on a blackboard" when used on a particular guitar.
The difference was, of course, that what the young guy could hear is something which stopped existing at least when you had passed 30.. I was at an age where I too couldn't hear that kind of sound from strings, but it was still not that long ago and I remembered and had noticed the difference, i.e. that I could not hear what I could hear before. For example the huge difference between fresh strings and week-old strings (and that fact has, over the decades, saved me tons of money which I would otherwise have spent on replacing strings all the time..)
I realize I in fact still do not know what the "L" is supposed to mean, in my country.