# Introduction to Logic

```Introduction to Logic
The Principles and Practice of
Reasoning
Orientation Session

If space permits, I will add at the end of
class today
 Review of Handouts and Course
Website
the content of this course
While the Roster is Called…
 We have one text (described in the
Course Description), but will also be
using a website – more on that later
 This is a skills-oriented class. Assigned
or not – plan on using all exercise
opportunities you can access (text and
website).
Using the Syllabus
All chapters and sections are from Hurley’s A Concise
Introduction to Logic (10th Edition)
Come prepared to discuss assigned
chapter/sections during the indicated weeks.
It’s easy to forget assignment due dates, especially for
the online homeworks.
Create some system for yourself that will keep you
on track.
 Homeworks are completed and submitted
online
 Quizzes are taken and submitted in class
 Classwork is completed and submitted in class
 A Portfolio is compiled during the semester and
is due in June.
Course Portfolio
Think of this as an ongoing record of your work in this
course.
The portfolio will cover three modules – the basics of logic,
propositional logic and categorical logic.
It may be submitted electronically (Powerpoint or other
web-enabled presentation project) or physically (set of
printed pages)
Course Policies
There is no extra credit. Instead, I will drop your lowest quiz and
Lateness:
No late classwork
Late homeworks (done online) are penalized 10% for each day
late.
Only one makeup quiz will be offered to those who miss a quiz for
documented reasons.
Course Content
 Hey, we all argue, right?
 The Argument Clinic
Logic deals with a different kind of
argument…
Logical Arguments
 Reasoning is the process of moving
toward conclusions on the basis of clear,
compelling and relevant supportive
statements.
 In much of logic, attention focuses on
how we draw conclusions from
statements, not on the truth of those
statements.
Discussion: Two Arguments
 Those who oppose
same-sex marriage are
simply Neanderthals.
 Everybody knows
same-sex marriage is a
threat to society.
 So, same-sex
marriages should be
allowed.
 Opposition to same-sex
marriage relies on
constitutionally suspect
reasoning.
 There is no clear
evidence that same-sex
marriage is a threat to
society.
 So, same-sex marriage
should be allowed.
Another Argument
 Any law or policy that limits constitutionally
protected freedoms is unacceptable.
 Laws against same-sex marriage limit
constitutionally protected freedoms.
 Support for this claim?
 So, laws against same-sex marriage are
unacceptable.
 You will have plenty of help


Classes, of course!
Professor accessibility
 [email protected]
213B – MW, 12 – 1 pm
Online (instant email) – W, 4 – 5 pm
 SOCS
 Website sign-up:

http://1pass.thomson.com/1pass/