Probably mid to late 20th century story. I believe the title is something like "Farewell Ilya" or "Goodbye..."   The alien tells the story. Actually, perhaps the astronauts are the aliens, since I think it takes place on another planet. I think the narrator is injured, or somehow gets "taken in" by the ship's crew. They treat him sort of like a pet.   Anyway, the alien/narrator describes all sorts of human behavior. He ends up falling in love with human laughter. The alien is vehemently vegetarian and is disgusted when he is offered meat by the crew of the spaceship (something about not eating plant matter either unless covered under some treaty). I think he moves by folding in appendages and rolling?? Despite all the bad things he observes, he is so taken with human laughter that he leaves with the crew.   The story may be in a letter format.   I read this years ago and cannot find it in any anthologies I own nor through internet searches.
This poor creature is taken aboard the spaceship and the humans do not know that it is intelligent.  The alien can repeat what it hears, e,g, "pass the sugar".  It is able to escape at night and it communicates messages to its fellow aliens.  It directs that they turn up the heat of the atmosphere (somehow they can do this) so as to force the humans to leave.  The alien protagonist states that it will die w/ the humans or leave with them.
Hi can you help me solve this exercise? Thanks. Let $f: [0;+\infty) \to \mathbb{R}$ be nonnegative and continuous function. Suppose $\forall a &gt; 0$  $\sum_{n=1}^{\infty} f(na)$ is convergent. Prove that $\int_{0}^{\infty}f(x) dx$ is convergent. I tried to solve it by using the Riemann sum, but for fixed a it doesn't work. I have no other ideas. Derivation of the formula for Ordinary Least Squares Linear Regression How to show $a^{2^n}+1 \mid a^{2^m}-1$? I've been struggling with this all day today. I imagine it's not very hard, but my algebra skills are terrible. So, how can I show that if $m&gt;n$ and $a$ is a positive integer, then $$a^{2^n}+1 \mid a^{2^m}-1.$$ I just can't get a coherent picture of what I'm supposed to do. If this too (see yesterday's question) boils down to the Unique Factorization Theorem, I would be very grateful for any intuition on how to think about this! How does a  work? If seen from the outer side, we can see through thinking it is transparent, while if seen from the inside, the glass acts as a mirror. How? How do I (or can I) SELECT DISTINCT on multiple columns? I need to retrieve all rows from a table where 2 columns combined are all different. So I want all the sales that do not have any other sales that happened on the same day for the same price. The sales that are unique based on day and price will get updated to an active status.  So I'm thinking:  UPDATE sales SET status = 'ACTIVE' WHERE id IN (SELECT DISTINCT (saleprice, saledate), id, count(id)              FROM sales              HAVING count = 1)   But my brain hurts going any farther than that. Where to download Chrome 32bit? Google has  so on a 32bit Debian machine it's not possible anymore to update the APT repository:  W: Failed to fetch http://dl.google.com/linux/chrome/deb/dists/stable/Release  Unable to find expected entry 'main/binary-i386/Packages' in Release file (Wrong sources.list entry or malformed file)   Also has the .deb file removed from Google servers as it seems.  Is there any alternative .deb download of the last release (46?) available somewhere?  Reason: For an automated Debian build system (debootstrap-based) I urgently need a way to install Google Chrome 32bit v46 (or similar). Switching to another browser (including Chromium) is not a quick enough option for me at the moment.. How to customise GNOME default background and lock screen image? I am building a Custom ISO of Ubuntu 18.04 LTS using CUBIC and I'd like to change the default background and lock screen image.  I added the backgrounds in /usr/share/backgrounds, changed the background in /usr/share/gnome-background-properties/ubuntu-wallpapers.xml file, but it does not seems to affect new users (for example the OEM user).  Also, I did not find any way to change the lock screen image. How can I check which songs or videos that I purchased from the iTunes Store have DRM restrictions?  All of the mobile OSes are very impressive to me at the moment, and I'm thinking about trying a non-iOS device again. I want to know now the impact it has on my Apple-sourced music collection though.  Is there a date cut-off for purchases when items went DRM free? Labeling all sides of the matrix with kbordermatrix I have a matrix with labels on the left and top. Now I want to have a label on all sides of the matrix. How can I change my code?  \documentclass[10 pt, a4paper, leqno, oneside] {report} \usepackage{kbordermatrix} \begin{document}  \renewcommand{\kbldelim}{(}% Left delimiter \renewcommand{\kbrdelim}{)}% Right delimiter \[   \tilde{\textbf{m}} = \kbordermatrix{     \mbox{} &amp; c_1 &amp; c_2 &amp; c_3 &amp; c_4 &amp; c_5 \\     % &amp; c_1 &amp; c_2 &amp; c_3 &amp; c_4 &amp; c_5 \\     r_1 &amp; 1 &amp; 1 &amp; 1 &amp; 1 &amp; 1 \\     r_2 &amp; 0 &amp; 1 &amp; 0 &amp; 0 &amp; 1 \\     r_3 &amp; 0 &amp; 0 &amp; 1 &amp; 0 &amp; 1 \\     r_4 &amp; 0 &amp; 0 &amp; 0 &amp; 1 &amp; 1 \\     r_5 &amp; 0 &amp; 0 &amp; 0 &amp; 0 &amp; 1    } \]  \end{document} I'm fairly excited for Unity, as it looks like a promising new direction for Ubuntu.  However, I do have a concern - will it be possible to use Unity without the global menu?  I have my window manager set to focus-follows-mouse/sloppy focus, and find the productivity gains to be immense. Sloppy focus is incompatible, however, with global menus, as it is possible for the focus to change while you move from window to menu.  Will Unity support an option to use window menus while still using Unity? Checking from shell script if a directory contains files From a shell script, how do I check if a directory contains files?  Something similar to this  if [ -e /some/dir/* ]; then echo "huzzah"; fi;   but which works if the directory contains one or several files (the above one only works with exactly 0 or 1 files). Inductive proof that there are infinitely many pairs of consecutive powerful integers? Non-trivial cyclic group with unique generator Let $G$ be a non-trivial cyclic group with an unique generator. Show that $G$ has exactly two elements.   Let $g$ be a generator of $G$. My first idea to approach the problem was to show that if $|G|=n &gt; 2$ then there is an integer $k$ between 1 and $n$ such that $\langle g^k \rangle = G$ or, equivalently, $g \in \langle g^k \rangle$. My second idea was to analyse the problem in 2 separate cases. For the first one, if $n$ is prime, let $k$ be a positive integer then, by Lagrange's Theorem, $|g^k| \mid n$ and, therefore, $\langle g^k \rangle = n$. Hence, we must conclude that, if $n &gt; 2$ the generator cannot be unique. For the second case, where $n$ is composite, I was hoping to get to a contradiction, but could not advance any further. Is there a way to develop either of these ideas or is it necessary a new approach? Booting from USB and not installing I created a live usb to boot Kubuntu, which has worked well enough. However, when the installation gets to the point of telling me to restart the computer (and it restarts) the installation window pops up again, and the computer is still signed in as a live user. None of the installation or settings appear to have saved.  Any ideas? I am always confused about where to put adverbs in sentences. For example, consider the questions below:        Why did they target us specifically?   Why did they target specifically us?   Why did they specifically target us?      I believe all these sentences mean the same. Am I correct? I am always confused about where to put adverbs such as always and specifically, etc. Is there a particular grammar rule for this?  Funny, you see, I can even form the above sentence in different ways.         I always confuse where to put this kind of adverb   Always I confuse where to put this kind of adverb What Happens to electrons after Alpha Decay and Nuclear Fission? Where do the electrons go? In alpha decay do 2 electrons follow the alpha particle and make stable Helium or does the larger daughter nucleus become an anion?  Also what do the electrons do in the mixture of fission and alpha decay? With Beryllium-8 it decays into two alpha particles and 4 lonely electrons or do you get two Helium atoms?If someone could add an entry to Holocron it would be greatly appreciated, thanks. Prove the equality of circle's areas Through a random point inside the circle, we draw $4$ lines with $45$ degrees between each other. Prove, that the total area of odd pieces, equals total area of even pieces.    I suppose there is a solution using integrals, but maybe there is geometric solution as well. I read about the new fancy progress bar which was added to apt 1.0 in  and how to enable it . However on running sudo apt-get update, I did not see the fancy progress bars. On reading the second link again, the solution explicitly requires you to use sudo apt update.  Hence my question is the difference between apt and apt-get. I thought they were one and the same. change caption in tufte class full-page figure I've tried to change the caption in a full-width float with tufte-book, but to no avail. I want the caption in this figure to be like more common LaTeX classes.  Here is a MWE and the result:  \documentclass[a4paper,nohyper]{tufte-book} %abstracton \usepackage{fontspec} \defaultfontfeatures{Ligatures={TeX}} \setmainfont[Numbers={OldStyle}]{Minion Pro} %or any other font \setsansfont{Myriad Pro} % or any other font \setmonofont[Scale=MatchLowercase]{Menlo} \usepackage{graphicx} \usepackage{wrapfig} \usepackage{sidecap} \usepackage[dvipsnames]{xcolor} \usepackage{polyglossia} \setmainlanguage{brazil} \usepackage[bookmarks]{hyperref} %\usepackage[font=sf, labelfont={sf}, margin=1cm]{caption} \newfontfamily{\A}{Al Bayan}  \begin{document}  \begin{figure*} \centering \includegraphics[width=.9\textwidth]{./camp-scene} \caption{Cena de Acampamento. Mir Sayyid Ali, séc. XVII. 28,4 x 20 cm. Harvard University Art Museums, 1958.75. Os tecidos preenchiam a vida tanto dos nômades quanto dos habitantes das cidades, cobrindo o chão e definindo o espaço. O papel onipresente dos tecidos é visto numa pintura de um acampamento nômade, atribuído ao pintor persa do século XVI Mir Sayyid Ali.} \label{fig:camp-scene} \end{figure*}  \end{document} Print lines between (and excluding) two patterns