No Nonsense

Anti-pseudoscience, anti-woo, pro science, pro critical thinking, no conspiracy theories, no spin. Count the logical fallacies. No Nonsense!

Members: 348
Latest Activity: yesterday

"Keep an open mind – but not so open that your brain falls out" -unknown

"Extraordinary claims require extraordinary evidence." -- Carl Sagan

"What can be asserted without evidence can also be dismissed without evidence." -- Christopher Hitchens

What is a logical fallacy? All arguments have the same basic structure: A therefore B. They begin with one or more premises (A), which is a fact or assumption upon which the argument is based. They then apply a logical principle (therefore) to arrive at a conclusion (B). An example of a logical principle is that of equivalence. For example, if you begin with the premises that A=B and B=C, you can apply the logical principle of equivalence to conclude that A=C. A logical fallacy is a false or incorrect logical principle. An argument that is based upon a logical fallacy is therefore not valid. It is important to note that if the logic of an argument is valid then the conclusion must also be valid, which means that if the premises are all true then the conclusion must also be true. Valid logic applied to one or more false premises, however, leads to an invalid argument. Also, if an argument is not valid the conclusion may, by chance, still be true. For a more thorough discussion of logical fallacies and how to structure a logical argument, see the New England Skeptical Society's article, How To Argue.

Top 20 Logical Fallacies (in alphabetical order) taken from -

The Skeptics' Guide To The Universe

The New England Skeptical Society The Skeptics' Guide To The Universe Science-Based Medicine
The James Randi Educational Foundation
Bad Science by Ben Goldacre
Simon Singh and his fight to mend British libel laws
Professor Richard Wiseman
PZ Myers' Pharyngula
Dr. Phil Plait and Bad Astronomy
Skeptic Blog
Michael Shermer's Baloney Detection Kit
The Demon-Haunted World: Science as a Candle in the Dark by Carl Sagan
The Skeptics' Dictionary
List of cognitive biases
Don Watson - Weasel Words
A List of Fallacious Arguments

Chat #NoNonsense

"No skeptic, to my knowledge, ever made a major scientific discovery or advanced the welfare of others."

-- Deepak Chopra (yes, he actually said that)

"The most exciting phrase to hear in science, the one that heralds the most discoveries, is not "Eureka!" (I found it!) but That's funny..." -Isaac Asimov

The scientific world view is full of awe and wonder. Understanding how truly awesome the universe is – in its elegant complexity, its staggering beauty, and the many intricate systems of which it is comprised – gives a profound feeling of connectedness and sparks the imagination. And it has the advantage of being real. -Steven Novella

The glory which is built upon a lie soon becomes a most unpleasant incumbrance. How easy it is to make people believe a lie, and how hard it is to undo that work again.
— Mark Twain

Discussion Forum

Psychic Power-NOT

Started by Ruth Anthony-Gardner. Last reply by Michael Penn Oct 14. 7 Replies

Gish Gallop

Started by Ruth Anthony-Gardner. Last reply by Tom Sarbeck Aug 18. 4 Replies

What counts as proof for existential threats

Started by Ruth Anthony-Gardner. Last reply by Tom Sarbeck Jun 14. 1 Reply

Cheating with Science

Started by Ruth Anthony-Gardner. Last reply by Michael Penn May 22. 6 Replies

Apocalypse anxiety

Started by Ruth Anthony-Gardner. Last reply by Luara May 9. 7 Replies

Young adults belief in demon posession

Started by Ruth Anthony-Gardner. Last reply by Ruth Anthony-Gardner May 8. 12 Replies

Challenging lies doesn't work

Started by Ruth Anthony-Gardner. Last reply by Michael Penn May 7. 2 Replies

Mere question elicits false memories

Started by Ruth Anthony-Gardner. Last reply by Michael Penn May 7. 1 Reply

Political discourse in US - fundamentally fallacious

Started by Ruth Anthony-Gardner. Last reply by Tom Sarbeck May 5. 13 Replies

F*ck You= Australia's Coal Policy

Started by Ruth Anthony-Gardner. Last reply by Loren Miller Apr 17. 4 Replies

Name truthiness

Started by Ruth Anthony-Gardner. Last reply by Joan Denoo Mar 1. 1 Reply

Frustration at RealClimate

Started by Ruth Anthony-Gardner. Last reply by Grinning Cat Dec 1, 2013. 2 Replies

Religion correlates with Climate Denial

Started by Ruth Anthony-Gardner Nov 27, 2013. 0 Replies

Liberal Washing

Started by Ruth Anthony-Gardner. Last reply by Joan Denoo Nov 2, 2013. 1 Reply

Information Technology amplifies irrational group behavior

Started by Ruth Anthony-Gardner. Last reply by Joan Denoo Apr 13, 2013. 3 Replies

6 criteria of conspiratorial thinking

Started by Ruth Anthony-Gardner. Last reply by Humble Pie Mar 24, 2013. 3 Replies


Started by Idaho Spud. Last reply by Idaho Spud Jan 10, 2013. 2 Replies

Comment Wall


You need to be a member of No Nonsense to add comments!

Comment by Grinning Cat yesterday


In response to statements that gay couples can't produce a child (and therefore their marriages shouldn't be recognized, or their sex is "sinful", or whatever), Dan Savage has famously retorted that "Anything is possible for God," and "I'm gonna keep inseminating my husband and keep my fingers crossed."

Comment by Michael Penn yesterday

Comment by Grinning Cat yesterday

War is Peace.

Freedom is Slavery.

Ignorance is Strength.

(more apropos than I knew!)

Comment by Patricia yesterday

Comment by Grinning Cat yesterday

Great cartoon, Ruth!

From Dan Barker's song "Nothing Fails Like Prayer":

It's the final week of the school year,
but you haven't studied your best
So you stay up and cram for the final exam
and pray for God's help on the test.
So you answer the questions with assurance
that the Lord would help you sail through.
When the results are returned, what have you learned?
God is no smarter than you.

And James, recognizing logical fallacies should absolutely be a key part of kids' -- and adults' -- education!

There's a website highlighting all sorts of striking but coincidental "spurious" correlations, that we discussed in "Correlation doesn't mean causation." (Our bees are on drugs!)

Comment by James M. Martin yesterday
Just a quick note to say that this is just possibly the most important group at A|N. Why? Because it is so nuts and bolts. The only way to attack dogma is to point out the fallacies in what passes for logic in the religionist message. My all time fave is post hoc reasoning. All religions lay claim to the "miraculous." If we could teach CHILDREN this one fallacy -- e.g. that God put the rainbow in the sky to say there would be no more world-wide destruction such as Noah's flood, the fact that we've only had a few tsunamis means God exists because, obviously, he has kept his word. Rainbows don't prove God. We can laugh at the Rev. John Hagees calling Katrina a punishment by God of the wicked city of New Orleans (God doesn't eat shellfish, you know, or doesn't want you to) preaching that after this, because of this is a silly invention of the evolutionists. But the great unwashed actually believe these silly things. They actually think that Jesus had a miraculous power of healing, not that when Reb Yeshua passed by he was able to cure Lazarus of his E.D. with some plant form of Cialis (more than likely his queer lips).
Comment by Ruth Anthony-Gardner on Sunday

Comment by Joan Denoo on Sunday

"Remember the past, live in the present and remember your preferred future." 

My mentor, author of  Thinking in the Future Tense by Edward B. Lindaman (May 1978), president of Whitworth College 1970 - 1980. Previously he was with North American Rockwell, as director of programming for the Apollo space project.

Comment by Grinning Cat on Sunday

Seen going around the net:

Ayn Rand, Rand Paul and Paul Ryan walk into a bar. The bartender serves them tainted alcohol because there are no regulations. They die.

(image source)

Comment by Joseph P on Sunday

When did I say he's a Muslim?  If I had as many assholes accusing me of being a Muslim, as he has, I'd be admitting it vocally, after my second election, just to fuck with them.


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