Does everything take longer than you plan?

Everything takes longer than you plan? Chapters 0:00 Done by Friday? 0:46 The planning fallacy 2:03 The worst-case guess 3:42 This week's to-do list 5:13 Does the kind of task matter? 6:53 Does everything take longer? 8:49 Why might we guess short? 10:05 What helped in tests Sources Buehler, R., Griffin, D., & Ross, M. (1994). Exploring the "planning fallacy": Why people underestimate their task completion times. Journal of Personality and Social Psychology, 67(3), 366-381. https://doi.org/10.1037/0022-3514.67.... Roy, M. M., Christenfeld, N. J. S., & McKenzie, C. R. M. (2005). Underestimating the duration of future events: Memory incorrectly used or memory bias? Psychological Bulletin, 131(5), 738-756. https://doi.org/10.1037/0033-2909.131... Flyvbjerg, B. (2014). What you should know about megaprojects and why: An overview. Project Management Journal, 45(2), 6-19. https://doi.org/10.1002/pmj.21409 Halkjelsvik, T., & Jorgensen, M. (2012). From origami to software development: A review of studies on judgment-based predictions of performance time. Psychological Bulletin, 138(2), 238-271. https://doi.org/10.1037/a0025996 Images University of Waterloo campus (2009) · Rasmus Lerdorf · CC BY 2.0 (https://www.flickr.com/photos/5605364...) Sydney Opera House under construction, 1967 · LindsayAH · CC BY-SA 4.0 · cropped; shared under the same licence (https://commons.wikimedia.org/wiki/Fi...) Music "Cherry Blossom" Kevin MacLeod (incompetech.com) / Licensed under Creative Commons: By Attribution 4.0 / http://creativecommons.org/licenses/b... (https://incompetech.com/music/royalty...) "Dreamy Flashback" Kevin MacLeod (incompetech.com) / Licensed under Creative Commons: By Attribution 4.0 / http://creativecommons.org/licenses/b... (https://incompetech.com/music/royalty...) Narration: synthetic voices (text to speech). Script researched, written and fact-checked by the channel's editor; every claim is checked in its primary source. The animation is drawn in code. Stick to the Science: why you do what you do. With sources.