There exists 'forall x' 
I just posted a new version of forall x, my introductory logic text. I have been using it as the text in my 130 member intro logic class this term, and I have been fairly satisfied. The process has allowed me to catch a bevy of typos and little slips. The new version corrects those, has added practice exercises, and has a new appendix discussing alternate symbol systems.

Commercial logic textbooks are, to be blunt, a scam. Every publisher has got one. I know, because they have sent me unsolicited desk copies. They know that I teach logic regularly and that I could turn my courses into a captive market for them. Textbook authors profit by complicity in this, but the lion's share goes to companies that are really not adding any value to the educational system. It is that state of affairs that led me to write forall x. The text is available under the Creative Commons license, which means that it is free for noncommercial use. I had it printed as a course reader for my students, and any other instructor is free to do the same.

The downside of not having a publisher is that no one is out there marketing forall x, sending desk copies to every professor anywhere who has taught logic. One kind Canadian has shown interest in using it in an abstract mathematics course. I am not sure how else to proceed by way of promoting it.

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