Yes, they have limitations, and want to lock you in. But iPads, like most Apple products, are designed obsessively to Just Work. Also, you get the option of having a Retina display, which may or may not be extra-helpful, depending on your dad's vision.
In general, it is bad form to peek under the sheets in the database. However, it could be extremely useful to tie a trigger to a primary key + address for these specific cases. The database should also not block on it if there is no DML or DDL going on -- just piping to a message queue or executing an external script or whatever.
Blue-skying. It's still early, here.
1. These metrics always increase every year
2. They always seem to have a little energy of their own
Lambda-CDM of academic publishing? Eventually the most important results will be entirely out of reach of the academic horizon?
I don't know about you, but the only time I notice the LEDs on my keyboard are when something's wrong (e.g. everything's frozen, and I look at the disk LED to see that it's just the disk busy again), and they're not very bright. This has a brighter RGB LED that gives you a wide range of colours. In practice, no, I wouldn't bother using one of these things on my laptop, because it's physically awkward; might be fun to build something like this for a desktop machine, I suppose. (OTOH, the next desktop machine I'm likely to build would be a Raspberry Pi, which has its own support for this kind of thing, and the LED could be useful because the box itself would be jammed behind the TV.)
In this case it's an Atmel atTiny85 instead of a PIC chip, and a tri-color RGB LED instead of three separate LEDs, but yeah, it's not all that complex. It also has a printed circuit board, not particularly complex, and yes, you could build it yourself on breadboard. You could also snark about how Arduinos cost ~$30 when they only have
You could also buy a Digispark for ~$9 which has a Tiny85 and a voltage regulator, and breaks out the pins for convenient access, with room for headers so you can build the equivalent of an Arduino shield. Instead of a USB socket, it uses the trick of printing traces on the PCB in a layout that acts as a USB Type A plug, so it's more compact and doesn't need a wire.
Or you could spend ~$8 for an Adafruit Trinket and add an LED; it may be a shade less convenient than the Digispark just because they put the connectors on two sides of the board instead of one (so it's harder to use an RGB LED, but you could put it on the back of the board.)
No, and no "thanks for playing", either. There are no clear lines in a dictatorship, it's whatever The Authorities feel like doing, and while you know that some things are definitely forbidden, like criticizing the dictator, you can never trust that anything else you do is safe.
Dictatorships have almost all the bad parts of monarchies*, with newer technology, and the leaders don't even have the excuse that some strange woman lying in a pond handed them a sword or that a Divine Being appointed them, so they have to make sure that the population stays afraid to mess with them. Ever.
By the way, if you want to read an astoundingly good article on Machiavelli, it starts here, at Ex Urbe's blog.
* Most dictatorships don't have hereditary succession, so the dictator is usually somebody who was competent and/or vicious enough to rise to the top, as opposed to being some random idiot who was lucky or unlucky enough to be the kid of the previous king. (North Korea excepted, along with many years of the Roman Empire..) On the other hand, this means that they know they're only in power as long as they suppress or coopt anybody else who's competent and vicious enough to displace them, so they never get to relax unless they can abscond with a lot of cash and move to the South of France.
My coworker, who was from Pakistan, didn't get interned, but he did get hauled in to show his papers. I think he had a green card at the time; he's a citizen now. But Muslim, so that made him suspicious, even though he's non-political.
Seemed relevant to your interests:
The arguments for Nick being Satoshi, other than the fact that he's one of the few dozen people with the skills and interests to do the design right, came down to
- "he uses this set of technical terms, and so does Satoshi" and
- "he also uses a few other sets of phrasing in his academic papers that Satoshi uses" and
- "pay no attention to the US-vs-UK spelling differences."
But the technical terms that the current speculation mentions are all standard terms in the field, like "trusted third party" (which was probably used more 5-10 years ago than today), "timestamp" used as a verb (common), "timestamp service" (there have been some done by crypto people like Stu Haber, and it's a well-understood concept.) The general language choices are mostly using passive phrasing like lots of academic papers do; you could argue that Satoshi is probably either an academic now, or has been one once, or learned English in an academic environment (i.e. learned it in college if he's actually Japanese.)
It's more likely that Satoshi is really Nick than that he's really David Chaum, but unless Nick admits to it in public or suddenly starts using his billions of dollars worth of bitcoins to build an Evil Genius Secret Headquarters, it'd be rude to hassle him about it even if you think it's true. (Also, in the latter case, you'd be saying that Nick isn't capable of maintaining his disguise as a mild-mannered academic while also secretly building his Secret Headquarters, and saying that "We can't tell who's really building this Secret Headquarters so it must be Nick!" doesn't really cut it.)
If the person you want to write about is the real Satoshi, he'd obviously say no.
If the person you want to write about the real Satoshi, he'd probably also say no. He might also ask you not to hassle him.
Actually, Stig Hackvan died a week or two ago. Wasn't him.