Comment to Women, Fire, Dangerous things

Lakoff, p. 148 “Let us consider a simple example of a presupposition. (a) I regret that Harry left. (b) I don’t regret that Harry left. (c) Harry left. Normally, the speaker who says (a) or its negation, (b), is taking (c) for granted. In the 1960s there were two alternatives available for trying to account…

Som mor logic textbooks

Paul Tomassi – Logic Priest, Graham – Logic, A Very Short Introduction Copi introduction to logic

Ebook: Chris Swoyer – Critical Reasoning A User’s Manual

I am taking a critical thinking class, and a book is available for that class. I’ll put it here as well, in case somone wants it. Chris Swoyer – Critical Reasoning A User’s Manual Alternative link (Mediafire)

John Nolt – Logics, chp. 11-12

I am taking an advanced logic class this semester. Som of the reading material has been posted in our internal system. I’ll post it here so that others may get good use of it as well. The text in question is John Nolt’s Logics chp. 11-12. I remade the pdfs so that they ar smaller…

Classical predicate logic and empty domains

Classical predicate logic and empty domains

Introduction In this essay I answer the question in the title with a very confident “Yes”, I give multiple arguments for this answer. For the purposes of this essay a pluralistic proposition theory of truth carriers with sentences as secondary truth carriers is assumed. The background and the reason for writing this essay is that…

Kennethamy on boring books and learning

piratefish I’m reading Irving Copi’s Introduction to Logic, very boring and not that well written, any suggestions? Just a college level book that gives a comprehensive intro to the topic. Thanks. kennethamy “Boring” is not a particularly apt criticism of a text. There are jazzier logic books out there, with bunches of cartoon and jokes…

“garbage in, garbage out” (GIGO) and deduction

Some people sometimes mention that deduction conforms to the GIGO principle. I will here show that in a straightforward interpretation of that, it is false. “Garbage in, garbage out” is a metaphor or sorts. The mental image I form when I hear it is something like a huge machine that, when garbage is put into…