No Nonsense

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

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"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

Reality TV as Analgesic Doublespeak

Started by Ruth Anthony-Gardner. Last reply by Grinning Cat Oct 10. 4 Replies

Ubiquitous Disconnect from Reality

Started by Ruth Anthony-Gardner. Last reply by Chris Sep 22. 13 Replies

Search Engine Manipulation Effect

Started by Ruth Anthony-Gardner Sep 18. 0 Replies

Tony Heller/Steve Goddard Climate Denier on Hypertribalism

Started by Ruth Anthony-Gardner. Last reply by Joan Denoo Sep 16. 28 Replies

Replacing Reality

Started by Ruth Anthony-Gardner. Last reply by Ruth Anthony-Gardner Aug 29. 6 Replies

tRump incoherent babbling

Started by Ruth Anthony-Gardner. Last reply by Loren Miller Aug 15. 17 Replies

Think tank really corrupt arms booster

Started by Ruth Anthony-Gardner. Last reply by Grinning Cat Aug 14. 2 Replies

Not The Onion - Steve Moore

Started by Ruth Anthony-Gardner. Last reply by tom sarbeck Jun 9. 12 Replies


Started by Ruth Anthony-Gardner. Last reply by Bertold Brautigan May 5. 25 Replies

Hell for christians? Hell for all?

Started by Patricia. Last reply by Joseph P Feb 7. 60 Replies

Misleading Public Polls

Started by Ruth Anthony-Gardner. Last reply by Ruth Anthony-Gardner Dec 8, 2015. 5 Replies

My arguments are always valid

Started by Ruth Anthony-Gardner. Last reply by tom sarbeck Nov 6, 2015. 4 Replies

The heart of anti-atheist prejudice is distrust

Started by Ruth Anthony-Gardner. Last reply by tom sarbeck Oct 20, 2015. 2 Replies

Idiocracy Now

Started by Ruth Anthony-Gardner. Last reply by Joseph P Sep 2, 2015. 4 Replies

It Takes More Faith to Be an Atheist Than to Believe in God?

Started by Bertold Brautigan. Last reply by Gerald Payne Aug 21, 2015. 21 Replies

Talking Nonsense as US Politcs

Started by Ruth Anthony-Gardner. Last reply by tom sarbeck Aug 17, 2015. 6 Replies

A Quick Puzzle to Test Your Problem-Solving

Started by Grinning Cat. Last reply by tom sarbeck Jul 4, 2015. 6 Replies

Comment Wall


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

Comment by sk8eycat on July 3, 2015 at 8:12pm

I dunno.  The only serious believer in my life now is my JW sister, and we do not discuss religion.  She has Asperger's Syndrome, and the JWs are the only friends she has.  It doesn't harm me to put up with her obsessions, and I need her help around the house.  .

She's not nearly as crazy as she was when we were kids; the only thing she does that gets on my last nerve is having serious discussions with doorbell-ringers about whose imaginary friend is the "right" one.  If I happen to be within earshot, I'll just say, "None!"  Or "Bastet."

Egyptian Cat Goddess Bastet Pedestal Statue

Comment by Michael Penn on July 3, 2015 at 6:35pm

If the discussion was about the existence of gods and you start it with gods, you are also going to end it with gods. Christians start with the conclusion that they want and believe from the very first word. I've had them tell me that I'm incredibly stupid when I say to them that there is no evidence. Maybe they meant the sunset, who knows?

Comment by sk8eycat on July 3, 2015 at 5:11pm

Dan Barker has said that many religionists/theists he has debated insist at the beginning, "First, we must start with god(s)."  They have it totally backwards; you start a debate or discussion on something you BOTH can agree on, and carry on from there.  Sort of like "I am alive...."

Comment by Bertold Brautigan on July 3, 2015 at 3:16pm

Good point, Cat. The xtian approach to logic is to start with the desired conclusion and then throw up a rickety scaffold of phony premises.

Comment by Grinning Cat on July 3, 2015 at 11:04am

Great cartoon, Ruth!

Rereading the intro here... one of my favorite examples of invalid logic producing a true conclusion is "simplifying" the fraction 16/64 by canceling sixes: 16/64 = 1/4.

Comment by tom sarbeck on July 3, 2015 at 1:13am

NO! This way, head!

And while I'm on your case, the sign you put up is so biased that I'm betting you won't tell us what's eating you.

Comment by Plinius on July 3, 2015 at 1:06am

Powerful image, Ruth!

Comment by Ruth Anthony-Gardner on July 2, 2015 at 10:28pm

Comment by Joseph P on June 26, 2015 at 3:13am

I almost always head out of the country for my news, Sk8ey.

Comment by Plinius on June 25, 2015 at 11:49pm

Thanks for the Ruby Bridges video! I remembered her from a newspaper clipping seen when very young, and I always wanted to know how she went on from that first day at school.


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