Unix users seem to disagree. Leaving aside that we spell it "fundamentally", I seem to be able to run the same software on my PC with *BSD, that I ran on my PDP11 with BSD with no significant problems. Hell, I can even read the same tapes written with tar. (I admit I have no drivers for DECtape on my PC, and my LA36 died some years ago but I am truely greatful for both "problems".)
Not if you pay for your electric bills. Or have no need for floating point in your (web)servers. Or if you consider security part of performance.
If you want to network, there are probably networking events in your local library - or you could talk to people in the car-wash queue.
I also have a T21 which I use as a dumb terminal for configuring servers - cos it has an RS232 port. Currently runing Xubuntu, but was running FreeBSD till I decided I wanted to try Xubuntu on something.
I also have a T61 (Also Xubuntu) which is used by visitors of all ages. None has needed any significant traiining AFAICR.
Oldest of all is a 760E - it still works, but lacks USB or any kind of networking, and a new OS means loads of floppies - so it may work, but it is not much actual use. One day I will put the HD in something else to install NetBSD, and then I could use PCMCIA network and USB cards.
And replaced with what, exactly? ftp?
I still have, and use, Symbian 60 phones - the upgrade process means that I cannot actually move to a newer version. There have been no updates for years - and unfortunately - I cannot install any apps (or even re-install the old ones) because the signatures have expired and no one maintains them.
Disclaimer: I am a happy Cyanogenmod user.
This is Europe. It can't be below 40F because we use centigrade/Celcius.
They seem to last about 20 years, and do the job brilliantly.
I have also seen "glow in the dark paint" before, but can't remember where (as in: which country), I think it was abandonned because it was not very good.
But nowhere near as credible.
And for that, the ideal solution is to use your tablet as the interface and Allcast to project it onto the TV (You do use Samsung products, don't you? - if not, there's always the Chromecast.) However, command line on a touch screen? No good. Most families are not like mine with four generations of Unix users.
As someone who often uses a program I have not used for over a year, with over 50 useful programs on my hierarchical menu, I prefer xfce. I know barely literate people who also prefer xfce to any version of Windows. I have only seen Win8 once, and was unable to help the owner of the laptop it was on in do anything at all.