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Download LogiCola

LogiCola is a program to help students learn logic.
It was last modified on 24 December 2016.
Click here to run it on Macintosh, or here to run it on Linux.

To install LogiCola in Windows:

After you click, you'll be asked: Do you want to RUN or SAVE this file? Click RUN; and keep insisting, if asked, that yes you do want to run this file. You may have to click your way around dire warnings about this being an unknown program that may harm your computer. Soon this dialog box will appear:

Or click here to install LogiCola in Windows

After you install LogiCola, click the cola-can icon to start the program:
If you installed to your flash drive, open it using MY COMPUTER so you can get to the LogiCola icon.
Cola-can icon
If you installed to your computer, the icon will be on your desktop or Start menu/page program list.

Introduction to Logic, third edition LogiCola on a Windows tablet BOOK: LogiCola goes with Gensler's Introduction to Logic (Routledge, 2017 or 2010 or 2002). Click here or here to order. The third edition is now out; click here for information.

TOUCHSCREENS AND TABLETS: You can do LogiCola using only touch, or using mouse-and-keyboard. LogiCola works nicely on Window tablets.

CLOUD SYNC: If you want to install LogiCola on multiple computers (not on a flash drive) and keep LogiCola scoring and configuration data in sync on all these computers, install a free Dropbox on each computer's desktop and turn on Cloud Sync using LogiCola's OPTIONS menu.

Cloud sync uses Dropbox. Click here to get free 2-GB cloud storage.

FURTHER UPDATES: If LogiCola is updated, you can repeat the setup process to update your program. But it's easier for you to update using TOOLS | UPDATE LOGICOLA on LogiCola's menu bar. Updating either way preserves your scores.

NON-WEB INSTALL: You can install LogiCola directly to a flash drive from any computer that has LogiCola installed; use TOOLS | COPY SCORES OR PROGRAM TO FLASH DRIVE on LogiCola's menu bar.

WINDOWS VERSIONS: The current Windows LogiCola should work with Windows XP-Vista-7-8-or-10, whether 32- or 64-bit. For earlier Windows or DOS, use these zipped forms of the 2003 LogiCola and its score processing program, which use the same score format.

MACINTOSH & LINUX: You can also run LogiCola in Macintosh or Linux.

iPads: You can run LogiCola on an iPad (or even an iPhone or iPod Touch) using a "remote server." Open the app store, get the free PocketCloud app, and follow the directions to set up PocketCloud on a Windows computer (on which you install LogiCola). Then you can run LogiCola on your iPad through this remote computer; however it's very slugglish and each remote computer can service only one iPad at a time. But could this basic idea over time evolve into something more usable?

BLACKBOARD: You can set up Blackboard so students can submit scores as WebCT assignments; see Chris Weigand's YouTube video and written instructions.

SHIRTS: Get a LogiCola shirt (many styles available).

HANDOUT: Here's a handout about downloading LogiCola that teachers can give to their students.

YOUNGER SISTER: LogiCola has a younger sister, EthiCola, about moral philosophy.

CHROMEBOOKS and ANDROID DEVICES: Codeweavers is working on a program that would let LogiCola (and most other Windows programs) run on Chromebooks and Android devices that use an Intel processor. I've tried a preliminary version of their program on an Acer R11 Chromebook and LogiCola basically works using it, but not all of the features. I hope that the final version will allow a fully functional LogiCola to run.

These are things you can also access from inside LogiCola or LogiSkor:

HELP FILES: for LogiCola and for LogiSkor (LogiCola's score processor); LogiCola News.

SUPPLEMENTARY MATERIALS: teacher manual for newer editions of the book, teacher manual for first edition, Logic Pretest (printable), Logic Pretest (Web-interactive), Flashcards, Sample Quizzes, Why the star test works, Logic symbols that you can paste into other documents, and classroom slides for many chapters: Introduction, Syllogistic Logic, Fallacies, Basic Propositional Logic, Propositional Proofs, Basic Quantificational Logic, Relations and Identity, Basic Modal Logic, Further Modal Systems, Deontic and Imperative Logic, Belief Logic, A Formalized Ethical Theory, Metalogic, History of Logic, Deviant Logic.

SYLLABI: for my basic and intermediate logic courses.

This is the preface for the third edition of my Introduction to Logic, which Routledge Press has just published. Click here or here to order.
This very comprehensive Introduction to Logic covers:
  • syllogisms;
  • informal aspects of reasoning (like meaning and fallacies);
  • inductive reasoning;
  • propositional and quantificational logic;
  • modal, deontic, and belief logic;
  • the formalization of an ethical view about the golden rule; and
  • metalogic, history of logic, deviant logic, and philosophy of logic.
Different parts can be used in a range of logic courses, from basic introductions to graduate courses. The teachers manual and the end of Chapter 1 both talk about which chapters fit which type of course.

Earlier Routledge editions appeared in 2002 and 2011. Features included (a) clear, concise writing; (b) engaging arguments from philosophy and everyday life; (c) simpler ways to test arguments, including an innovative proof method and the syllogism star-test; (d) the widest range of materials of any logic text; (e) high suitability for self-study and preparation for tests like the LSAT; (f) a reasonable price (a third that of some competitors); and (g) the free companion LogiCola instructional program (which randomly generates problems, gives feedback on answers, provides help and explanations, and records progress). I'm happy with how earlier editions were received, often with lavish praise.

I improved this third edition in many ways. I went through the book, making explanations clearer and more concise. I especially worked on areas that students find difficult, such as (to give a few examples) why "all A is B" and "some A is not B" are contradictories (§2.4), deriving syllogistic conclusions (§2.5), the transition from inference rules to formal proofs (§§6.10-13 & 7.1), how to evaluate formulas in quantificational logic (§§8.3 & 8.5), how to translate "exactly one" and "exactly two" in identity logic (§9.1), multiple-quantifier translations and endless-loop refutations in relational logic (§§9.4-9.5), when to drop a necessary formula into the actual world in modal logic (§10.2), and how inference rules work in belief logic (§13.2). I expanded sections on traditional Copi proofs (§§7.5, 8.6, and 9.7, urged on by reviewers) and truth trees (§7.6, urged on by my friend Séamus Murphy), for teachers who might also want to teach these methods or have students learn them on their own for additional credit (as I do). "For Further Reading" now mentions further sections of the book that an advanced student might want to pursue while doing specific chapters; for example, the Basic Propositional Logic chapter goes well with sections on metalogic, deviant logic, and philosophy of logic. I didn't substantially change exercise sections. Despite additions, the book is now six pages shorter.

The book now has a very nice Kindle e-book version, with real page numbers, based on a second version of the manuscript that I made with simplified formatting. And yes, you can add your own highlighting and notes.

I improved the companion LogiCola software, which runs on Windows, Macintosh, and Linux. Cloud Sync allows syncing scores between various computers. Proofs have a Training Wheels option; this gives hints about what to derive (it might bold lines 4 and 7 and ask "4 is an IF-THEN; do you have the first part true or the second part false?") - hints disappear as your score builds up. Touch features let LogiCola be done using only touch, only mouse and keyboard, or any combination of these; touch works nicely on Windows tablets or touch-screen monitors. Quantificational translations have a Hints option; this gives Loglish hints about how to translate English sentences (for "All Italians are lovers" it might say "For all x, if x is Italian then x is a lover") - hints disappear as your score builds up. There are exercises for Copi proofs and truth trees; to process scores from these, your LogiSkor program needs a version date of at least January 2016. And the Macintosh setup is easier. LogiCola (with a score-processing program, teachers manual, class slides, flash cards, and sample quizzes) can be downloaded for free from http://www.harryhiker.com/lc. All supplementary materials are conveniently accessible from LogiCola's HELP menu; so I suggest that you just install LogiCola (teachers should check the option to install the score processor too).

I wish to thank all who have somehow contributed to this third edition. I thank Andy Beck at Routledge and his staff and reviewers, who made good suggestions. I thank my logic students, especially those whose puzzled looks pushed me to make things clearer. And I thank the many teachers, students, and self-learners who e mailed me, often saying things like "I love the book and software, but there's one thing I have trouble with ...." If this third edition is a genuine improvement, then there are many people to thank besides me.

Long live logic!

Harry J. Gensler
Philosophy Department
Loyola University
Chicago, IL 60660 USA