Today, we live in a world overflowing with information, with people representing diverse values ​​and positions.
In these circumstances, we must appropriately select and select information, coexist with others by better understanding their perspectives, and, above all, cultivate critical thinking.
This book is designed as a textbook for students taking courses in introductory logic, especially logic-related courses for critical thinking.

[Logic for Critical Thinking] mainly deals with argumentation.
In particular, it focuses on how the contents of symbolic logic can be utilized to appropriately handle reasoning in everyday language.
[Critical Thinking], published early this year, added items such as argument explanations in addition to argumentation, and strengthened the content on moral arguments commonly encountered in everyday life.
[Critical Thinking] and [Logic for Critical Thinking] are very different in terms of content.
Although there is some overlap, the two books complement each other by structuring the narrative and practice questions differently.

In particular, the predicate logic included in [Logic for Critical Thinking] this time will show the difference from [Critical Thinking] more clearly.

Through predicate logic, we can clearly examine the various complex and subtle expressions we use in our daily lives.
Through predicate logic, we can clearly analyze the logical structure of various expressions we encounter in daily life.
Another reason we need to know this is because the Law School Aptitude Test is expected to include content covered in predicate logic.

In reality, the words we use are very complex.
We also use a variety of complex sentences.
However, if we look closely, these diverse and complex sentences can be organized into the most basic sentence forms.
In terms of sentence structure, the smallest unit that cannot be divided any further is a simple proposition.
In fact, even a simple proposition, which is the smallest unit of a sentence, has elements that make it up.
The smallest unit of a sentence is made up of words combined together.
Categorical logic, which consists of categorical propositions, examines the logical system through the relationships between these components.
In short, categorical logic is a logical system composed of categorical propositions... (omitted)

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