Julia Galef

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Julia Galef
Rationally Speaking
Main interests
Philosophy of science, applied rationality

Julia Galef (/ˈɡləf/; born July 4, 1983[citation needed]) is an American philosopher of science, writer, speaker and co-founder of the Center for Applied Rationality.[1] She hosts Rationally Speaking, the official podcast of New York City Skeptics, which she has done since its inception in 2010, sharing the show with co-host and philosopher Massimo Pigliucci and produced by Benny Pollak until 2015.[2][3]


Galef was born in 1983 in Maryland into a Jewish family.[citation needed] She received a BA in statistics from Columbia University. In 2010 she joined the board of directors of the New York City Skeptics.[4] She co-founded and became president of the nonprofit Center for Applied Rationality in 2012. The organization also gives workshops to train people to internalize and use strategies based on the principles of rationality on a more regular basis to improve their reasoning and decision-making skills and achieve goals.[5][6] She was elected a fellow of the Committee for Skeptical Inquiry in 2015.[7]

Popularization of rationality research

In 2009, Galef began co-hosting the Rationally Speaking Podcast with the

Lawrence Krauss, James Randi, and Peter Singer

Galef frequently speaks on rationality and moderates debates at skeptic conferences.[8][9] She gives public lectures to organizations including the Center for Inquiry and the Secular Student Alliance.[10] From 2010 to 2015, she was a speaker for the Northeast Conference on Science and Skepticism.[11][12]

Galef (right) at Het Denkgelag 2015 moderating a conversation between Richard Dawkins and Lawrence Krauss

Galef began writing the blog Measure of Doubt in 2011 with her brother,[13] as well as writing for Religion Dispatches[14] and Scientific American.[15] Since April 2015 she has been the sole host of the Rationally Speaking podcast.[16] Galef's activities as a writer, podcaster and president of the Center for Applied Rationality are mentioned by The Atlantic,[17] The Verge,[18] and NPR.[19]

In 2014, she wrote several articles and recorded several short videos for

Fast Company,[23] and The Wall Street Journal.[24] In particular her idea of keeping a "surprise journal" received attention, which is one of the techniques Galef uses to record incidents where her expectations were wrong, in order to recognize personal faulty assumptions that expose and counterweight the "bias blind spot". According to Galef, it can be easier to adjust internalized beliefs by framing the new evidence as a surprise.[23][25]

In February 2016, Galef delivered a

National Public Radio's TED Radio Hour in November 2016.[27]

In 2021, her first book

Ideas on rationality

Julia Galef often explains common confusions and popular misconceptions of

instrumental rationality". She describes epistemic rationality as a way of reasoning according to logic and the principles of probability theory to form beliefs and conclusions. In contrast, she describes instrumental rationality as a decision-making process in which people choose the action that maximizes their expected utility, whatever their goals are.[5]

Galef discussed the concept of Straw Vulcan, originally coined by the website TV Tropes,[31] to describe the incorrect perception about rationality as a way of thinking that denies emotions such as love and lacks appreciations for beauty. It refers to the fictional character Spock (a half-Vulcan) in Star Trek, who is often seen to exemplify this caricature of rationality. Galef argues that, given the gross irrationality Spock has seen in humans, his failure to adjust his expectations about humans' ability to make rational decisions is itself a case of irrationality.[31] In 2011, Galef gave a talk on this subject at Skepticon.[non-primary source needed]


  1. ^ Matsakis, Louise (May 17, 2016). "The 'Rationality' Workshop That Teaches People to Think More Like Computers". Motherboard. Retrieved July 4, 2017.
  2. ^ Pigliucci, Massimo (December 2, 2009). "Podcast Teaser: Why rationality?". Psychology Today (blog). Retrieved March 3, 2015.[permanent dead link]
  3. .
  4. ^ "Julia Galef joins NYC Skeptics Board of Directors". New York City Skeptics. August 11, 2010. Retrieved March 6, 2015.
  5. ^ a b c Stiefel, Todd; Metskas, Amanda K. (May 22, 2013). "Julia Galef". The Humanist Hour. Episode 083. The Humanist. Retrieved March 3, 2015.
  6. Skeptic Magazine
    . Retrieved March 6, 2015.
  7. ^ "Ten Distinguished Scientists and Scholars Named Fellows of Committee for Skeptical Inquiry". Skeptical Inquirer. 39 (6). 2015. Archived from the original on October 16, 2015.
  8. ^ "Julia Galef – Skepticon 5". YouTube. Hambone Productions. November 30, 2012. Retrieved April 12, 2015.
  9. ^ Bruno Van de Casteele (February 1, 2015). "A Passion for Science and Reason". Skeptoid. Brian Dunning. Retrieved April 12, 2015.
  10. ^ "Moderating Discussion :: Secular Student Alliance 2010 Annual Conference". YouTube. Secular Student Alliance. September 3, 2010. Retrieved April 12, 2015.
  11. ^ "NECSS SPEAKERS". NECSS. Northeast Conference on Science and Skepticism. Archived from the original on April 23, 2012. Retrieved April 12, 2015.
  12. ^ "Speakers". necss. Northeast Conference on Science and Skepticism. Archived from the original on April 5, 2015. Retrieved April 12, 2015.
  13. ^ "New Rationality Blog: 'Measure of Doubt'". LessWrong. April 1, 2011. Retrieved March 6, 2015.
  14. ^ "Julia Galef". Religion Dispatches. Archived from the original on June 4, 2014. Retrieved March 6, 2015. Archived from religiondispatches.org/contributors/juliagalef/
  15. ^ "Stories by Julia Galef". Scientific American. Archived from the original on March 14, 2013. Retrieved March 6, 2015. Archived from scientificamerican.com/author.cfm?id=3125
  16. Rationally Speaking
    . April 5, 2015. Retrieved April 12, 2015.
  17. ^ Benfield, Kaid (September 13, 2011). "The Legacy of 9/11 for Community and the Built Environment". The Atlantic. Retrieved March 4, 2015.
  18. ^ Popper, Ben (October 22, 2012). "Rapture of the nerds: will the Singularity turn us into gods or end the human race?". The Verge. Retrieved March 4, 2015.
  19. ^ Lombrozo, Tania (December 8, 2014). "What If Atheists Were Defined By Their Actions?". NPR. Retrieved March 4, 2015.
  20. ^ "Make Better Decisions: Redefining "Giving Up"". Big Think. 2014. Retrieved March 5, 2015.
  21. ^ Gots, Jason (2013). "What if Neil deGrasse Tyson Were Your Mentor?". Big Think. Retrieved March 5, 2015.
  22. ^ Kade, Allison (January 28, 2014). "6 Times We Betray Our Budgets (And Clever Ways To Stop)". Forbes. Retrieved March 4, 2015.
  23. ^ a b Segran, Elizabeth (September 23, 2014). "A new technique for creating more aha-moments: The Surprise Journal". Fast Company. Retrieved March 4, 2015.
  24. ^ Chen, Angela (January 1, 2014). "More Rational Resolutions". Wall Street Journal. Retrieved March 4, 2015.
  25. ^ Galef, Julia (January 2, 2015). "Surprise!". Slate. Retrieved March 4, 2015.
  26. ^ Galef, Julia (June 29, 2016). "Why you think you're right — even if you're wrong". TED. Retrieved December 18, 2016.
  27. ^ "Are We Wrong To Think We're Right?". NPR. November 4, 2016. Retrieved December 18, 2016.
  28. ^ Shermer, Michael (April 13, 2021). "'The Scout Mindset' Review: How to 'Update' Beliefs". Wall Street Journal.
  29. ^ Wallace, Benjamin (April 13, 2021). "The Tech Elite's Favorite Pop Intellectual". Intelligencer.
  30. .
  31. ^ a b Galef, Julia (April 2013). "Debunking Straw Vulcan Rationality". Big Think. Retrieved March 4, 2015.

External links