Here is the  from Why is a Red Herring Red? by Mitchell Symons (2020):  Consequently, when the herd is hunted, it is the slowest and weakest ones at the back that are killed first.
Several years ago I heard of something called dummy subjects in high school. It was then stated that, for example, it is a dummy subject when it starts many instances of sentences, e.g.        It is rainy today.   It is hard to imagine how hard is to live alone.   It is not my university degree that matters here.     My question is if we can use it with plural subjects? For example in       If some think that in Mahmoud Dowlatabadi’s works it is only social themes that matter and the writer is ignoring fictional arrays and artistic techniques, at least, endings of his stories show wrongness of this idea.     My question deals with the italicized part. If this usage is OK, can we also write they are social themes that matter? I mean can they also play the role of a dummy subject?
Black artifacts when looking through many transparent objects? I am trying to adjust spacing between entries in LoF and LoT. My code is  \documentclass[11pt,a4paper]{book} \usepackage[english,greek]{babel} \setcounter{secnumdepth}{3} \usepackage[iso-8859-7]{inputenc} \usepackage{kerkis} \usepackage[pdftex]{graphicx} \usepackage[margin=2.8cm]{geometry} \usepackage[Glenn]{fncychap} \usepackage{fancyhdr} %!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! \usepackage{tocloft} \setlength\cftparskip{-15pt}%For ToC works great \setlength\cftbeforesecskip{-8pt}%For ToC works great \setlength\cftbeforesubsecskip{-5pt}%For ToC works great \setlength\cftbeforechapskip{-1pt}%For ToC works great \setlength\cftaftertoctitleskip{-50pt}%For ToC works great  % I also tried \renewcommand instead of \setlength \setlength\cftbeforeloftitleskip{-2cm}%It has no effect in LoF \setlength\cftbeforelottitleskip{-5cm}%It has no effect inLoT  \makeatletter \newcommand*{\tocwithouttitle}{\@starttoc{toc}} \makeatother %-------------------------------------------------------------------------------- \makeatletter \newcommand*{\lofwithouttitle}{\@starttoc{lof}} \makeatother %-------------------------------------------------------------------------------- \makeatletter \newcommand*{\lotwithouttitle}{\@starttoc{lot}} \makeatother %-------------------------------------------------------------------------------- %!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! \renewcommand{\cftsecleader}{\cftdotfill{\cftdotsep}}  \begin{document}  %~~~~~~~~~~~~~~~~~~~~~~~Front-Page~~~~~~~~~~~~~~~~~~~~~~~~~~ \begin{titlepage} Εξώφυλλο \end{titlepage}  \chapter*{\contentsname} \markboth{\MakeUppercase{\contentsname}}{\MakeUppercase{\contentsname}} \tocwithouttitle \addcontentsline{toc}{chapter}{Πειρεχόμενα}  %LoF \chapter*{Κατάλογος σχημάτων}%List of Figures \markboth{\MakeUppercase{Κατάλογος Σχημάτων}}{\MakeUppercase{Κατάλογος Σχημάτων}} %\renewcommand\cftbeforeloftitleskip{5pt} %\renewcommand\cftbeforelottitleskip{5pt} \lofwithouttitle %\setlength\cftbeforefigskip{0pt} \addcontentsline{toc}{chapter}{Κατάλογος Σχημάτων}  %LoT \newpage  \chapter*{Κατάλογος Πινάκων} \markboth{\MakeUppercase{Κατάλογος Πινάκων}}{\MakeUppercase{Κατάλογος Πινάκων}} \lotwithouttitle %\renewcommand\cftbeforeloftitleskip{5pt} %\renewcommand\cftbeforelottitleskip{5pt} \addcontentsline{toc}{chapter}{Κατάλογος Πινάκων}  \newpage \end{document}   While some code is working on ToC(See comments in Preamble) I cannot adjust spacing in LoF/LoT. How can this be achieved? Related:   This is a subtly different question because I'm not asking whether there's a historical relationship between the two lineages.  I am asking this question because answers to these questions:      are making assumptions about the appearance of Padme while pregnant, the period of gestation, and appearance of newborn babies.  All of these presuppose that the "humans" of the Star Wars Galaxy are 100% biologically equivalent to us.   In fact, as far as I know, we don't actually know any of those facts from canon.   (Do we?)   All we know is that "human" children and adults look like us.  So, do we have any canon or out-of-universe commentary that tells us that Star Wars humans and Earth humans are biologically equivalent?  Another way to put this would be  If presented with a Star Wars human and a Milky Way human, would the best doctors or the best medical droids be able to distinguish them? Good keyboard layouts for typing (La)TeX When typing (La)TeX some keys are used a lot more often then in plain text, especially \, {, }, [, ], $, ^ and _. On most keyboard layouts these keys are rather cumbersome to type. The English QWERTY keyboard is a lot better than the German QWERTZ, but is still far from optimal.  Given that I mostly type mathematical texts in English, what keyboard layout would you recommend?  Bonus points for the following:   Ability to type non-English Latin characters, especially German umlauts. Some similarity to QWERTZ or QWERTY as I'm most used to these layouts (I currently use the US-International layout from Linux) Ability to type math symbols directly (Greek letters, \times, etc.) Is a semigroup with unique right identity and left inverse a group? We know that a semigroup with a right identity and right inverse for all elements is a group (e.g. see ). Symmetrically, also a left identity together with a left inverse implies a group. We also know that a semigroup with a right identity and a left inverse is NOT necessarily a group (see ). My questions are:   in a semigroup, is the existence of a UNIQUE right identity together with the existence of a left inverse enough to have a group? in a semigroup, is the existence of a right identity together with the existence of a UNIQUE left inverse enough to have a group?   I think both these claims are false,  ut haven't found a counter-example so far. Seems that I just proved $2=4$. If you are not satisfied with answers on someone else's question, should you ask your own? Suppose you had a question, and you really want a good answer that would solve your problem, but noticed it was already asked by someone else. Now, a lot of answers had been posted and upvoted, and maybe one was accepted. However, none of the answers solved your problem. The system does not promote the question very much because it is not considered "unanswered", and a lot of users who would otherwise bother to give a correct answer will probably skip the question completely as there are already many highly-voted answers.  Now, what should you do in this case?  One idea is to ask a new, completely identical question, but now you're in control to decide when it is answered. But would that go against SE policy? Why can two (or more) electric field lines never cross? The the title is self explanatory, I guess.  Why can two (or more) electric  never cross? Suppose $z\neq -1$ is a complex number of norm 1m $(|z| =1)$. I know that $z= n + mi$, what is the most straightforward way of solving this problem? I was also given the following sketch for a possible approach. Keyboard layout isn't kept upon reboot I had a problem with the keyboard layout changing from PT (I'm Portuguese) to EN automatically with the last Ubuntu updates in Ubuntu 13.10. After Ubuntu 14.04 came out, I formatted my computer and installed the new version.  After that I haven't had any problems until the recent Ubuntu base update 2 or 3 days ago, when I started having the same problem again. I even removed the English keyboard from the Keyboard configurations, left only the Portuguese one, but still, every time I reboot my PC I get the keyboard configured for EN, despite Ubuntu displaying the contrary?  How can I remove this? I don't want to format the PC again and I'm getting really tired of this problem, since it looks like many Portuguese/Brasilian Ubuntu users are having the same problem. Improved Help Center - site-specific pages and site-specific edits to all pages Right now, moderators can edit some pages in a site's Help Center. For example, the entire /help/on-topic page can be edited. However, the /help/dont-ask page can't be edited at all.  I'd like to see two changes to the Help Center:   All pages should be editable by site moderators. Some pages do apply to all sites, such as the /help/dont-ask page I mentioned above. However, it may be useful to edit in some site-specific guidance. The entire page doesn't need to be editable in order to ensure that key commonalities across the network remain in place on all sites. This uneditable content should be at the top of the page and moderators should be able to add site-specific content to the bottom. Moderators should be able to add new pages. Instead of maintaining meta tag [faq], FAQs can be added right into the Help Center from Meta. The Help Center serves as a single point of reference for the community rules, norms, and policies. Meta questions can be used to discuss updates to pages. This avoids issues such as question and answer ownership and the ability to accept/change accepted answers as users come and go from a site. An active site will always have diamond moderators to perform the edits to the Help Center.   Note that site-specific pages do already exist. , which no other sites have. This is something relevant to Stack Overflow (and perhaps a few other sites). It would be nice to allow sites that have this policy to link to their own Help Center for it and to edit the page to provide additional examples that may be relevant to their user base. Where can I find sample or real Selenium projects. All the material I can find on github and on internet are basic, and never intermediate or advanced.  How does a real Selenium project look in real life? How can I find sample code? Find the subgroups of A4 I had a question I was hoping for some help on:     Find all of the subgroups of $A_4$   Here is what I know:  $A_4$ is the alternating group on 4 letters. That is it is the set of all even permutations. The elements are:  $(1), (12)(34), (13)(24), (14)(23), (123), (132), (124), (142), (134), (143), (234), (243)$   which totals to 12 elements. Which means, the subgroups should have order 1,2,3,4,6 and 12. The groups of order 1 and order 12 are trivial. I also know the groups of order 2 which are:  $[1,(12)(34)], [1, (13)(24)], [1, (14)(23)]$  but would someone be able to help me find the subgroups of order 3, 4 and 6 and be able to provide a good, easy explanation of how you got to them for me? I'm pretty sure there is no such groups of order 6, but I don't know how to explain why.  Thank you so much for your help in advance, I really appreciate it! How should we handle downvote retaliation? How must I deal with anti-virus software on Windows 7 I know this question is looking like an easy question or not a question at all but it's not really easy question. I'm not related to security and anti-viruses and just don't trust every provided anti-virus.  So first question is a real question - Is it OK (safe) to not use anti-virus at all. I know how to use firewall, usually I use only trusted connections and surfing trusted sites. My chances to get virus is really low. Even I've got a bit outdated PC and don't want to pay the performance for it. I can do monthly scans without having one installed - is it OK to be safe ?  If not can you recommend a good free antivirus solution? Prove that the dihedral group $D_4$ can not be written as a direct product of two groups What is the best way to go about calling a function given a string with the function's name in a Python program.  For example, let's say that I have a module foo, and I have a string whose content is "bar". What is the best way to call foo.bar()?  I need to get the return value of the function, which is why I don't just use eval. I figured out how to do it by using eval to define a temp function that returns the result of that function call, but I'm hoping that there is a more elegant way to do this. When estimating variance, why do unbiased estimators divide by n-1 yet maximum likelihood estimates divide by n? I am totally confused: On the one hand you can read all kinds of explanations why you have to divide by n-1 to get an unbiased estimator for the (unknown) population variance (degrees of freedom, not defined for sample size 1 etc.) - see e.g.  or .  On the other hand when it comes to variance estimation of a supposed normal distribution all of this doesn't seem to be true anymore. There it is said that the maximum likelihood estimator for variance includes only a division by n - see e.g. .  Now, can anyone please enlighten me why it is true here but not there? I mean normality is what most models boil down to (not least due to the ). So is the choice "division by n" yet the best choice for finding the best estimation for the true population variance after all?!? How do I mount an `img` created with /bin/dd of a hard drive? Is there a good Valgrind substitute for Windows?