Is this a good book to start studying informal logic? What exactly should I expect?
>>24942641This title is baffling. "Formal logic" doesn't mean "specific" logic. It's called "formal" because it deals strictly with the form of arguments, not their content. The distinction is between form and matter, not formal and informal. Material logic is its own thing (oft ignored because of the infamies of the Ockhamites).But to answer your question, get Socratic Logic by Peter Kreeft.
>>24942641There is no reason to limit yourself to informal logic. Many good introductory logic books and critical thinking books cover both informal and formal logic, and you need to know both.>>24943235Seconding this book.https://archive.org/details/peter-kreeft-socratic-logicNov 14, 2023https://youtu.be/-CUcYOT2BzcNov 24, 2023https://youtu.be/_0-EM6hr4IcDec 6, 2023https://youtu.be/fREgfDIlSPcDec 29, 2023https://youtu.be/Ug4IdNt0mfkFeb 19, 2024https://youtu.be/lvB7J8gphSwFeb 23, 2024https://youtu.be/MJy7a7_H83gApr 2, 2024https://youtu.be/KCag3jyc1o8Apr 29, 2024https://youtu.be/bmeOyIMDvXkJul 3, 2024https://youtu.be/--ZcD6Odm-4Jul 4, 2024https://youtu.be/ajEXwvfriE8Jul 26, 2024https://youtu.be/vVYconX8lzQSep 15, 2024https://youtu.be/SAqSxwY4cecJune 26, 2025https://youtu.be/Z3k7eLRiwOISep 26, 2025https://youtu.be/EINouOeV0AkThese are good too:https://annas-archive.org/md5/c26f685fb955fab4b6a579e122cd19adGood primer, short bookhttps://annas-archive.org/md5/c1c4a972753ce86d1d82c2c3ef189af9Extended version with exerciseshttps://annas-archive.org/md5/4e88b733bdbdcb097172bb427db5bca6https://annas-archive.org/md5/7dd390a7784e5e7507669ea271466ff7https://open.umn.edu/opentextbooks/textbooks/introduction-to-logic-and-critical-thinkinghttps://annas-archive.org/md5/5af2e8e2eb3a07c46df10b2de453775chttps://annas-archive.org/md5/5885cebb239fbd36f6c370d49c44018bhttps://annas-archive.org/md5/ff708dec36284c381333681bfbce4d1ehttps://archive.org/details/logicorrightuseo00watthttps://archive.org/details/logick_2507_librivoxtable of contents: https://www.heritagebooks.org/content/Logicsample.pdf
>>24943510Based logic anon. Doing good anon. Are you the same anon who talks about the Prussian school system?
>>24943541Yes, that's me.https://archive.4plebs.org/pol/thread/512205412/#512207515
>>24942641I had a look at it and it includes a little formal logic too. It looks like a good book. That book plus this would probably be a good combo:forallx.openlogicproject.org This lecture series is also good although the audio intentionally gets progressively worse to make you want to buy the mp3 download, but the first few videos should have ok audio.https://m.youtube.com/playlist?list=PLqsoWxJ-qmMtr7i6D_yvSpPC-hTOzdWas
Also study Euclid's Elements, it develops logical thinking, that's why they stopped teaching it, the Prussian education system is all about suppressing logic/critical thinking/the trivium for the bottom 99.5% of the population while teaching it to the top 0.5%.https://elements.ratherthanpaper.com/1.1https://youtu.be/XLlThlqCFeghttps://elements.ratherthanpaper.com/1.2https://youtu.be/UHZO2dviZfUhttps://elements.ratherthanpaper.com/1.3https://youtu.be/_ZwcobIExtohttps://www.desmos.com/geometryhttps://www.latimes.com/archives/la-xpm-2006-jan-30-oe-crease30-story.html
>>24943776
You also need to learn grammar. Grammar, logic and rhetoric are interconnected, these are the Trivium, that's the real critical thinking. Study Latin to get an understanding of grammar, and read the Trivium book by Miriam Joseph I posted earlier.Familia Romanahttps://archive.org/details/familia-romanaaudiohttps://archive.org/details/familia-romana-and-colloquia-personarum-audio-files>>>/t/1344565exercitia latinahttps://dn721508.ca.archive.org/0/items/lingua-latina-per-se-illustrata_202506/Lingua%20Lat%C4%ABna%20per%20s%C4%93%20ill%C5%ABstr%C4%81ta/Pars%20I/Exercitia%20Lat%C4%ABna%20I.pdfcolloquia personarumhttps://dn721508.ca.archive.org/0/items/lingua-latina-per-se-illustrata_202506/Lingua%20Lat%C4%ABna%20per%20s%C4%93%20ill%C5%ABstr%C4%81ta/Pars%20I/Suppl%C4%93menta/%C3%98rberg%2C%20Colloquia%20pers%C5%8Dn%C4%81rum.pdfneumann companionhttps://leftychan.net/edu/src/1608528074592-0.pdfanswer keyhttps://dn721508.ca.archive.org/0/items/lingua-latina-per-se-illustrata_202506/Lingua%20Lat%C4%ABna%20per%20s%C4%93%20ill%C5%ABstr%C4%81ta/Teacher%27s%20Materials.pdf01https://files.catbox.moe/zj3yws.mp402https://files.catbox.moe/3t7sc3.mp403https://files.catbox.moe/1cjlwe.mp404https://files.catbox.moe/5ljwg8.mp405https://files.catbox.moe/etzxkw.mp406https://files.catbox.moe/0kh9gs.mp407https://files.catbox.moe/1hntqg.mp408https://files.catbox.moe/559z4u.mp409https://files.catbox.moe/heuw4i.mp410https://files.catbox.moe/n9gpgw.mp411https://files.catbox.moe/zvf2dc.mp412https://files.catbox.moe/a0art4.mp413https://files.catbox.moe/n580tf.mp414https://files.catbox.moe/h2eikt.mp415https://files.catbox.moe/rqbjv6.mp416https://files.catbox.moe/wi5xus.mp417https://files.catbox.moe/ht9noe.mp418https://files.catbox.moe/9ospv5.mp419https://files.catbox.moe/9o2h9f.mp420https://files.catbox.moe/r1bafj.mp421https://files.catbox.moe/x6y9sd.mp422https://files.catbox.moe/65vrqi.mp423https://files.catbox.moe/2tybr2.mp424https://files.catbox.moe/5nlup0.mp425https://files.catbox.moe/kwehqn.mp426https://files.catbox.moe/7rim8t.mp427https://files.catbox.moe/464bxv.mp428https://files.catbox.moe/f2k98o.mp429https://files.catbox.moe/kfoafs.mp430https://files.catbox.moe/xmf1qc.mp431https://files.catbox.moe/2svzr7.mp4https://m.youtube.com/playlist?list=PLNnqqvK2yDEFVdM_5wV4Od8kV2GaSo7jzhttps://youtu.be/AOcy6RHw7A8https://en.wikipedia.org/wiki/Trivial_schoolThese are also good:Principles of general grammar. Comp. and arranged for the use of colleges and schools by Roemer, Jeanhttps://archive.org/details/principlesgener00roemgoogPrinciples of general grammar : adapted to the capacity of youth, and proper to serve as an introduction to the study of languages by Silvestre de Sacy, A. I. (Antoine Isaac)https://archive.org/details/principlesgener00sacygoog
lewis carroll symbolic logic is nice
This guy has a lot of stuff on his youtube channel and website.https://youtu.be/HBueOsRp9Ls
One good way to learn and practice logic is to download LSAT tests and do questions on the logical reasoning section, and then google explanations and discussions of the questions.https://img.cracklsat.net/lsat/pt/pt1.pdf...https://img.cracklsat.net/lsat/pt/pt90.pdfPicrel is what those questions look like. Change the url above and you have 90 such tests online for free download. Just google "lsat preptest 1 explanations" and similar or part of the text of a question, there are multiple sites which have explanations and discussions of the questions.There are also a lot of books, youtube videos and other materials.https://annas-archive.org/md5/ff708dec36284c381333681bfbce4d1ehttps://www.youtube.com/playlist?list=PLeamyERJVQLDHH0zijOOpqULKD6yU2UxeI've mostly done the logical reasoning section, but from what I've heard the reading comprehension section is good too and is also about logic and critical thinking.
>>24943549Good to find you. Got something on Math and Physics?
Lol, triviumfag is up to his bullshitting again
>>24943235How is this one?
>>24942641I was assigned intro to logic by irving copi, I supplemented that with more advanced formal logic books, and that was it. Try to practice the books, and apply it to philosophy. Study empirical methods of proving things too, along with statistics and you're fully developed.
>>24944184>>24943776>>24943779https://archive.4plebs.org/pol/thread/522481839https://www.youtube.com/playlist?list=PLNnqqvK2yDEFVdM_5wV4Od8kV2GaSo7jzhttps://warosu.org/lit/thread/24673316#p24673316https://amateurlogician.com/mathematics-physics/https://archive.4plebs.org/pol/thread/515019673/#515019673
Thank you all for your recommendations.
https://www.zhibit.org/diemythographer/die-mythographer-die/occasional-letter-number-one-2006https://archive.org/details/easylessonsonrea00whatuofthttps://babel.hathitrust.org/cgi/pt?id=pst.000003010372https://babel.hathitrust.org/cgi/pt?id=hvd.hxjnv6https://archive.org/details/elementsoflogic04whathttps://archive.org/details/elementsofrheto00whatuofthttps://www.logicmuseum.com/wiki/Authors/Ockham/Summa_Logicaehttps://books.google.com/books?id=IcgAAAAAMAAJhttps://annas-archive.org/md5/fb7021b4951d69c14b5872ed3a994cfbamateurlogician.com
Euclid's elements has for thousands of years been the book to read, it is mentioned by name several times in the lit top 100 books and his geometry and tradition even more, it's a shame that it has been allowed to be ignored for so long
https://youtu.be/AOcy6RHw7A8
>>24943510Hey anon is there any book equivalent to the Socratic Logic book that introduces Scholastic Logic? I saw you talking about Ockham in the other thread but I want to be a Scotist.
>>24945566I think Socratic Logic by Peter Kreeft is a book in the Scholastic tradition. This too:https://archive.org/details/logicorrightuseo00watthttps://archive.org/details/logick_2507_librivoxtable of contents:https://www.heritagebooks.org/content/Logicsample.pdfThere is also:https://archive.org/details/manualofmodernsc02merc/page/133/mode/1upListen to this:https://m.youtube.com/playlist?list=PLNnqqvK2yDEFVdM_5wV4Od8kV2GaSo7jz
An Elementary Treatise on Logic: Comprising the Essential Principles and Different Modes of Reasoning in the Form of Question and Answer by Hezekiah G. Ufford, publication date 1823https://archive.org/details/anelementarytre00uffogoog
>>24944819Thanks anon
>the philosophy majors are turning the first logic chapter from a discrete mathematics book into a semester long borefest that doesn't even get to the interesting applications of logic like circuit design again
https://youtu.be/yJxiWmmJ3dc
https://annas-archive.org/md5/6d52684635541350d724c7da5ded95e8
>>24946010I study math too, and informal logic is not taught there.
>>24943920>you should not make assumptions that are...dropped that cookie cutter shit
>>24946563https://youtu.be/yKwvZOj5I6ghttps://youtu.be/7XjWxfAH1MMhttps://en.wikipedia.org/wiki/Enthymeme
>>24946563>>24946760>In jurisprudence, the interpretation of syntactically ambiguous phrases in statutory texts or contracts may be done by courts. Occasionally, claims based on highly improbable interpretations of such ambiguities are dismissed as being frivolous litigation and without merit.[citation needed] The term parse forest refers to the collection of all possible syntactic structures, known as parse trees, that can represent the ambiguous sentence's meanings.[2][3] The task of clarifying which meaning is actually intended from among the possibilities is known as syntactic disambiguation.https://en.wikipedia.org/wiki/Syntactic_ambiguity
>>24946780
>>24946784https://www.logicmuseum.com/wiki/Authors/Ockham/Summa_Logicae/Book_Ihttps://www.logicmuseum.com/wiki/Authors/Ockham/Summa_Logicae/Book_III-4
>>24946799>Give me an x-ray of a kangaroo with three legs.>Yesterday I saw an eagle looking out of my bedroom window.>Let's eat, grandma.https://youtu.be/-OuEZSDus5g
>>24946807https://archive.4plebs.org/pol/thread/516200433/#516205882
https://archive.ph/ZR5g0>This process of analyses and conceptual definition and reconfiguration has been going on for centuries, with each generation building on the work done by the generations that had come before it. It is based on sound and logical principles or as my rabbi friend has it “We study rational principles. It is the logic that is godly. No argument is accepted without absolute proof. When the conclusion is reached, the logic is compelling, unassailable and demanding. The principles are absolute.” This is in fact not too dissimilar from what theoretical physicists do, when they conceptualize particles and processes in order to explain the underlying workings of the universe based on observation. The difference, of course, is what observations are being analyzed and studied: While theoretical physicists may be using the data gleaned from experiments in the Large Hadron Collider, yeshiva students are observing the Talmud, which they believe is a message from the creator of the universe.https://cross-currents.com/2018/11/23/what-do-they-study-at-yeshivas/
https://archive.4plebs.org/pol/thread/503426619
>>24946807At the end of that video he says:>Notice amphiboly is similar to equivocation. Now, to distinguish the difference, remember that equivocation arises from ambiguity in a word or phrase used by the arguer but amphiboly arises from an ambiguity in a statement usually made by someone other than the arguer.This is incorrect.Amphiboly is similar to equivocation; both are fallacies of ambiguity.But the distinction is not about who made the statement (the arguer vs. someone else).The difference lies in where the ambiguity comes from, not who said it.Equivocation arises from ambiguity in a single word or phrase that is used in more than one sense within an argument.Amphiboly arises from grammatical or syntactic ambiguity in a whole statement or sentence, often due to unclear structure or punctuation.Either fallacy can involve statements made by the arguer or by someone else.Here's what he should have said in the video:>Amphiboly is similar to equivocation. To distinguish the difference, remember that equivocation arises from ambiguity in a word or phrase, whereas amphiboly arises from grammatical or syntactic ambiguity in a statement.It's about semantic/lexical ambiguity vs syntactic ambiguity.https://en.wikipedia.org/wiki/Equivocationhttps://en.wikipedia.org/wiki/Syntactic_ambiguity
picrel is fromhttps://archive.org/details/logicorrightuseo00watthttps://archive.org/details/logick_2507_librivoxtable of contents: https://www.heritagebooks.org/content/Logicsample.pdf
>>24948097this is the table of contents
here's another open access bookhttps://cwi.pressbooks.pub/revisedfundamentalmethodsoflogic/front-matter/table-of-contents/
The Art of Logical Thinkingby William Walker Atkinsonhttps://archive.org/details/artoflogicalthin00atki
Logic Gallery, Aristotle to the Presentby David Maranshttps://www.e-booksdirectory.com/details.php?ebook=8793
https://www.youtube.com/playlist?list=PLMpofmkxKHBJfta_JzekLbWGHUSLUJoLt
