‘The usual suspects’: Euler diagrams of letter signatories as a practical application for set theory

The day before the 2017 Labour Party Conference in Brighton, Labour Vision published an essay in which I argued that responsible non-Jews on the Left should take note of majority Jewish opinion, and not ignore it in favour of tiny minority groups on the fringes of the Jewish community whose opinion happens to be more convenient for Leftists. What actually happened at the conference is history — and quite unpleasant history at that (for details, I recommend reading both Marcus Dysch’s overview of events and David Collier’s eyewitness account). There’s much more to be said on the topic, and I’ll get around to saying some of it before long, but for now, I’d like to revisit the odd little centrepiece of my Labour Vision essay: the analysis of signatories to four letters opposing action against antisemitism. (tl;dr: There are very few Jews who are committed anti-Zionists, but the anti-Zionist movement needs them in order to maintain the impression of not being anti-Jewish, so a lot of the same names get recycled between different open letters to the press. Also, a tutorial on how to make Euler diagrams in R. Something for everyone?)

euler_diagram

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RStudio, Jupyter, Emacs, Vim: nothing that works properly is easy to use and nothing that is easy to use works properly

So I am preparing to teach quantitative analysis of social media data using R, the open source language for statistical programming. I usually do anything code-related in Emacs, because I already know how to use Emacs and you can do everything code-related in Emacs and I don’t want to install and learn the quirks of loads of different IDEs. But that argument won’t make sense from the point of view of my students, firstly because they won’t need to do everything code-related, they’ll just need to create R notebooks, and secondly because they don’t already know how to use Emacs, and learning how to use Emacs is hard because Emacs is weird.

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