star wars - Why did the Lars family need an astromech droid?

It was very clear why Owen decided to buy C-3PO:

OWEN: What I really need is a droid who understands the binary language of moisture vaporators.

But they appeared to be really interested in acquiring an astromech droid since when the first one (R5-D4) blew up because of a bad motivator, they decided to get R2-D2.

What use would they have for an astromech droid?

Answer

I agree it seems strange. R2 droids are specifically engineered to work on starfighters

this rounded, waist-high droid was made specifically to fit in military starfighter astromech slots

However, it probably retains the general purpose of an astromech droid:

a type of droid that served as an automated mechanic, performing a variety of repair duties

which means it would be handy to have around in a semi industrialized agricultural environment. We also see that R2 series is very high quality.

So this is a bit like buying the highest quality Swiss Army Knife -- sure it's engineered for military use, but it is handy in many other situations. Or maybe imagine buying a Humvee -- could be handy for some kinds of rural work.

Update: as @SQB pointed out above, Owen originally went for an R5 unit, which is the low cost budget version of the R2. Perhaps he gravitated to the R5 first out of frugal farmer instincts, but R2D2 (as a used unit) was a tolerable price.

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harry potter - Do the Kwikspell courses work?

In Harry Potter we are introduced to Kwikspell course in The Chamber of Secrets (and never hear about it again). We see Filch taking courses, presumably by mail. The descriptions of Kwikspell make me think it is for people who are weak in magic (kind of like how Neville was supposed to be when he was younger), but had magic in them nonetheless. However, Ron's comments later in the chapter make it sound like it is mainly for Squibs to learn magic. However, it is strongly implied through out all the books that Squibs are essentially Muggles, and will never be able to do magic. How then is a Kwikspell course supposed to work? Do we have any information to know if it works at all? Is it a scam? An answer from any level of canon is welcome. Answer Kwikspell courses are (probably) useful to some wizards, but not to squibs. The Kwikspell course literature comes with two testimonials. Madam Z. Nettles of Topsham writes: ‘I had no memory for incantations and my potions were a family joke...

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In time Keeps on Slippin' , Farnsworth creates a basketball team which he matures by abusing Chronitons. This leads to time skipping forward by random, but ever increasing amounts. How much time was skipped in this way? Answer Unfortunately, I don't think a good estimate can be made for this, for two reasons: Many of the time skips move forward by an indeterminate amount of time. At one point, the Professor mentions localized regions of space skipping forward much more than others. We then see two young boys on the street below complaining about having to pay social security, only to suddenly become senior citizens and start complaining about wanting their money. Thus, each individual could have experienced a different amount of time skippage.

game of thrones - Is Syrio Forel dead?

In the episode 'The Pointy End' (Season 1 Episode 8) when Arya runs from the Lannister guards you hear the sound of a sword being dropped (around 4:56): [embedded content] After that neither Syrio or Ser Meryn Trant is never mentioned or seen in the show again, except when Arya mentions to the Hound that Ser Meryn Trant killed Syrio. Is there any mention in the books that Syrio actually dies?

tolkiens legendarium - Difference between elves and dwarves blacksmithing in the Lord of the Rings

Both the elves and the dwarves were famous for their metal work in the Lord of the Rings trilogy, but what is the difference between what they made, and which one had the better skill of making amours and swords? Answer James Christopher's answer sums up the second part of your question well, but as to the difference in what they made, a little more detail is needed. Once the Elves learned to forge with steel, the shape of the sword changed, now being able to take on the form of a great broadsword or a light and agile curved sword. Additionally, they took great pride in decorating their swords. As we see in the Lord of the Rings , some swords like Sting had magical properties such as glowing blue when orcs are near. As far as the use of Mithril, lotr.wikia has two contradictory passages: Thus, Elven blades became renowned as great weapons, capable of performing deeds beyond the skill of their handlers and were even more glorious when the use of Mithril was allowed to the Elves. ...

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