Known and unknown unknowns Nederlandse testdag 2025

Transcript

1. Known & unknown unknowns
2. Linda van de Vooren The slides and more will be shared at the end of the talk
3. How do you know?
4. Unknown Unknown Known knowns Known Known Known unknowns Unknown knowns Unknown unknowns The Rumsfeld Matrix
5. My (un)known unknowns Maths Code
6. Active and tacit knowledge Unknown Unknown Known knowns Known Known Known unknowns Unknown knowns Unknown unknowns
7. Where is the problem? • Curse of knowledge Also: Curse of expertise, Expert’s curse 1989
8. Where is the problem? Also: Consensus bias 1977 • Curse of knowledge • False consensus effect
9. Where is the problem? 1999 • Curse of knowledge • False consensus effect • Dunning-Kruger effect
10. Where is the problem? 1952 • Curse of knowledge • False consensus effect • Dunning-Kruger effect • Naive realism
11. Where is the problem? 1931-1934 • Curse of knowledge • False consensus effect • Dunning-Kruger effect • Naive realism • Zone of proximal development Learner can do unaided Learner can do with guidance Learner cannot do
12. Where is the problem? 13th century / 1970 (Zen Buddhism) • Curse of knowledge • False consensus effect • Dunning-Kruger effect • Naive realism • Zone of proximal development • Shoshin
13. Where is the problem? • Curse of knowledge • False consensus effect • Dunning-Kruger effect • Naive realism • Zone of proximal development • Shoshin
14. Retaining knowledge • Spaced repetition • Practice tests • Low-stakes testing • Receiving and applying feedback • Spaced repetition • Active note taking • Teaching others
15. Recollecting knowledge Initial stage Input via - Visual - Acoustic - Semantic - Tactile Short-Term memory 15-30 sec 5-9 items Long-Term memory Active repetition Unlimited* Lost forever Retrieval from Short- Term memory Mostly sequential Retrieval from Long- Term memory Associations
16. How to deal with unknowns Do • Identify • Explore • Be curious • Be suspicious Don’t • Assume • Panic • Ignore • Judge
17. Let’s literally get into it
18. Ready to experience it?
20. Thank you https://LindavandeVooren.nl/ NLtestdag-2025/ I have so many stickers, please come find me if you want some
22. Used images • Slide 2 ‘Hello’ behzad-ghaffarian- 5JcdQfzR_YA-unsplash • Slide 3 ‘?’ emily-morter-8xAA0f9yQnE- unsplash • Slide 9 Dunning-Kruger By Phlsph7 - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.ph p?curid=124731078 • Slide 10 Naïve realism By Mcooperwhite - Own work. Illustration is a reproduction of diagrams as seen in Robinson et al. (1995) and Ross & Ward (1996)., CC BY-SA 4.0, https://commons.wikimedia.org/w/index.ph p?curid=44928118 • Slide 15 ‘Knowledge’ gabriella-clare- marino-GSLA0FVY9qI-unsplash • Slide 17 ‘Wood walkway’ todd-trapani- v2Jf_jpNamc-unsplash • Slide 17 ‘Hallway’ kamil-feczko- GhxWry42_zQ-unsplash • Slide 17 ‘Cave’ joshua-sortino- lRA_WTczjgw-unsplash • Slide 18 ‘Mug’ katie-drazdauskaite- uTWKKYqt3qQ-unsplash • Black cat: Design by Linda van de Vooren • Slides background: Design from canva pro subscription • Icons used: standard powerpoint