Logic & Critical Thinking – Statements vs. Arguments
(with Examples)
In logic and critical thinking, it's crucial to distinguish between a simple statement and a
structured argument. While both involve propositions, their purpose and composition are
fundamentally different.
What is a Statement?
As discussed in Document 4, a statement (or proposition) is a declarative sentence that is
either definitively true or definitively false. It's a single claim or assertion about the world.
Characteristics of a Statement:
● It declares something.
● It has a truth value (True or False).
● It stands alone as a single piece of information.
Examples of Statements:
● "The sun rises in the east." (True)
● "All birds can fly." (False)
● "My computer is turned off." (Could be true or false, but definitely one or the other)
Diagram: A Single Statement
+-------------------+
| STATEMENT |
| (True or False) |
+-------------------+
|
V
"The cat is on the mat."
What is an Argument?
An argument in logic is not a disagreement or a quarrel. Instead, it is a set of statements, one
of which is claimed to be supported by the others. Essentially, it's an attempt to persuade or
prove something by offering reasons.
Characteristics of an Argument:
● It consists of two or more statements.
● It has at least one premise (a statement offered as a reason or evidence).
● It has one conclusion (the statement that the premises are intended to support or prove).
● There is an inferential claim – the idea that the premises are supposed to lead to or
imply the conclusion.
Diagram: Structure of an Argument
+-------------------+
| PREMISE 1 | <-- Reason/Evidence
+-------------------+
|
V
+-------------------+
| PREMISE 2 | <-- Reason/Evidence
(with Examples)
In logic and critical thinking, it's crucial to distinguish between a simple statement and a
structured argument. While both involve propositions, their purpose and composition are
fundamentally different.
What is a Statement?
As discussed in Document 4, a statement (or proposition) is a declarative sentence that is
either definitively true or definitively false. It's a single claim or assertion about the world.
Characteristics of a Statement:
● It declares something.
● It has a truth value (True or False).
● It stands alone as a single piece of information.
Examples of Statements:
● "The sun rises in the east." (True)
● "All birds can fly." (False)
● "My computer is turned off." (Could be true or false, but definitely one or the other)
Diagram: A Single Statement
+-------------------+
| STATEMENT |
| (True or False) |
+-------------------+
|
V
"The cat is on the mat."
What is an Argument?
An argument in logic is not a disagreement or a quarrel. Instead, it is a set of statements, one
of which is claimed to be supported by the others. Essentially, it's an attempt to persuade or
prove something by offering reasons.
Characteristics of an Argument:
● It consists of two or more statements.
● It has at least one premise (a statement offered as a reason or evidence).
● It has one conclusion (the statement that the premises are intended to support or prove).
● There is an inferential claim – the idea that the premises are supposed to lead to or
imply the conclusion.
Diagram: Structure of an Argument
+-------------------+
| PREMISE 1 | <-- Reason/Evidence
+-------------------+
|
V
+-------------------+
| PREMISE 2 | <-- Reason/Evidence
