A false premise is an incorrect proposition that forms the basis of an argument or syllogism. Since the premise (proposition, or assumption) is not correct, the conclusion drawn may be in error. However, the logical validity of an argument is a function of its internal consistency, not the truth value of its premises. For example, consider this syllogism, which involves a false premise: * If the streets are wet, it has rained recently. (premise) * The streets are wet. (premise) * Therefore it has rained recently. (conclusion) This argument is logically valid, but quite demonstrably wrong, because its first premise is false - one could hose down the streets, the local river could have flooded etc. A simple logical analysis will not reveal the error in this argument, since that analysis must accept the truth of the argument's premises. For this reason, an argument based on false premises can be much more difficult to refute, or even discuss, than one featuring a normal logical error, as the truth of its premises must be established to the satisfaction of all parties. Another feature of an argument based on false premises that can bedevil critics, is that its conclusion can in fact be true. Consider the above example again. It may well be that it has recently rained and that the streets are wet. This does nothing to prove the first premise, but can make its claims more difficult to refute. This underlies the basic epistemological problem of establishing causal relationships. (Wikipedia).
Stuff They Don't Want You to Know - Dirty Tricks: False Flag Attacks
Imagine if a government disguised its operatives as members of some other organization -- and then attacked itself. While this might sound crazy, several historians have argued that false flag attacks are more than just conspiracy theories. http://howstuffworks.com http://facebook.com/Con
From playlist Stuff They Don't Want You To Know
How to determine the truth of a statement using a truth table
👉 Learn how to determine the truth or false of a conditional statement. A conditional statement is an if-then statement connecting a hypothesis (p) and the conclusion (q). If the hypothesis of a statement is represented by p and the conclusion is represented by q, then the conditional stat
From playlist Conditional Statements
How to determine the truth of a statement using a truth table
👉 Learn how to determine the truth or false of a conditional statement. A conditional statement is an if-then statement connecting a hypothesis (p) and the conclusion (q). If the hypothesis of a statement is represented by p and the conclusion is represented by q, then the conditional stat
From playlist Conditional Statements
How to determine the truth table from a statement and determine its validity
👉 Learn how to determine the truth or false of a conditional statement. A conditional statement is an if-then statement connecting a hypothesis (p) and the conclusion (q). If the hypothesis of a statement is represented by p and the conclusion is represented by q, then the conditional stat
From playlist Conditional Statements
CCSS What are truth tables and how can we create them for conditional statements
👉 Learn how to determine the truth or false of a conditional statement. A conditional statement is an if-then statement connecting a hypothesis (p) and the conclusion (q). If the hypothesis of a statement is represented by p and the conclusion is represented by q, then the conditional stat
From playlist Conditional Statements
Most paradoxes either stem from the misunderstanding of a topic, or aren't really paradoxes. However, here is a paradox that seems to contradict logic itself. What's going on here? And what does the liar paradox have to do with computer science? #some2
From playlist Summer of Math Exposition 2 videos
A Brief Introduction to Proofs
This video serves as an introduction to proofs.
From playlist Summer of Math Exposition Youtube Videos
Write a statement in conditional form and determine the truth ex 2
👉 Learn how to determine the truth or false of a conditional statement. A conditional statement is an if-then statement connecting a hypothesis (p) and the conclusion (q). If the hypothesis of a statement is represented by p and the conclusion is represented by q, then the conditional stat
From playlist Conditional Statements
Conditional Statements | Propositional Logic
In this video I talk about conditional statements, truth tables, and logical equivalence. This knowledge sets us up to be able to do some fun proofs! Be looking out for those videos! Facebook: https://www.facebook.com/braingainzofficial Instagram: https://www.instagram.com/braingainzoffi
From playlist Discrete Math
1. Ch. 1 (Part 1/3) Introduction to Logic, Philosophy 10, UC San Diego - BSLIF
Video lecture corresponding to _Basic Sentential Logic and Informal Fallacies_, Introduction, and Chapter 1, Part 1 of 3. This is for the class Introduction to Logic, Philosophy 10, UC San Diego.
From playlist UC San Diego: PHIL 10 - Introduction to Logic | CosmoLearning.org Philosophy
Testing Syllogisms by Counterexample // Lesson 24 [INTRODUCTORY LOGIC]
Although it can feel like there are infinitely many kinds of categorical syllogisms, in fact there are only 256, and of those, only 40 are valid. So how can we confirm which ones are valid and which ones are invalid, especially if we're not already familiar with the terms of the argument?
From playlist Introductory Logic
Truth and Validity // Lesson 23 [INTRODUCTORY LOGIC]
The fact that truth and validity are different (though related) concepts is one of the most difficult ideas for logic students to grasp. A valid syllogism can contain false statements. And true statements can often be found in invalid syllogisms. But the two concepts are neither necessary
From playlist Introductory Logic
6. Ch. 2, Sections 2.4 & 2.5. Introduction to Logic, Philosophy 10, UC San Diego - BSLIF
Video lecture corresponding to _Basic Sentential Logic and Informal Fallacies_, Chapter 2, Sections 2.4 & 2.5. This is for the class Introduction to Logic, Philosophy 10, UC San Diego.
From playlist UC San Diego: PHIL 10 - Introduction to Logic | CosmoLearning.org Philosophy
How to use a truth table and counter example to determine the truth value of a statement
👉 Learn how to determine the truth or false of a conditional statement. A conditional statement is an if-then statement connecting a hypothesis (p) and the conclusion (q). If the hypothesis of a statement is represented by p and the conclusion is represented by q, then the conditional stat
From playlist Conditional Statements
From playlist e. Sets and Logic
Logical Arguments - Modus Ponens & Modus Tollens
Modus Ponens and Modus Tollens are two logical argument forms. In either case, these have two premises and a conclusion. These argument forms are called valid, which means that if you accept the hypotheses, then it is valid to conclude the conclusion. This is distinct from having a sound a
From playlist Discrete Math (Full Course: Sets, Logic, Proofs, Probability, Graph Theory, etc)
This video functions as a brief introduction to many different topics in formal logic. Notes on the Images: I looked into the legality of using images for this video a good deal and I've come to the conclusion that there is nothing in this video which could remotely imply these images ar
From playlist Summer of Math Exposition 2 videos
Is an Argument a Deduction Rule or Not: If (P and Q) Then R. Not P or Not Q. Therefore Not R
This video explains how to use a truth table to determine if an argument is a valid deduction rule or not. mathispower4u.com
From playlist Symbolic Logic and Proofs (Discrete Math)
VALID arguments, SOUND arguments, and ENTAILMENT - Logic
In this video on #Logic / #PhilosophicalLogic we look at valid arguments, sound arguments, and learn how to determine validity using truth tables. We do a few examples. 0:00 [Intro] 0:13 [Valid Arguments] 1:16 [Sound Arguments] 2:30 [Valid Arguments and Truth Tables] 06:08 [Example Questi
From playlist Logic in Philosophy and Mathematics
Determining the truth of a conditional statement
👉 Learn how to determine the truth or false of a conditional statement. A conditional statement is an if-then statement connecting a hypothesis (p) and the conclusion (q). If the hypothesis of a statement is represented by p and the conclusion is represented by q, then the conditional stat
From playlist Conditional Statements