“Prediction is not the same thing as understanding, but in the absence of prediction, we can certainly doubt understanding.”
Source: Everyday Irrationality: How Pseudo-Scientists, Lunatics, and the Rest of Us Systematically Fail to Think Rationally (2001), Chapter 6, “Three Specific Irrationalities of Probabilistic Judgment” (p. 97)
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Robyn Dawes 11
American psychologist 1936–2010Related quotes

Source: Permaculture: A Designers' Manual (1988), chapter 2.2
“Predictability is not how things will go, but how they can go.”
Kalam (2018)

“You can only predict things after they’ve happened.”
Section 1, “Politics, Economics, and the Nation” Introduction (p. 7; quoting Eugene Ionesco)
A Mathematician Reads the Newspaper (1995)

1960s-1980s, "How should economists choose?" (1981)
[Stacy McGaugh, 2011, The Baryonic Tully-Fisher Relation of Gas-Rich Galaxies as a Test of ΛCDM and MOND, p. 16, ApJ, http://arxiv.org/abs/1107.2934]

Source: ZERO to ONE

"What Was Newt Gingrich Talking About?" http://www.slate.com/content/slate/blogs/weigel/2010/09/12/what_was_newt_gingrich_talking_about.html
2010s
"Event Horizon" https://web.archive.org/web/20110718030432/http://www.thatsmags.com/shanghai/index.php/article/detail/304/event-horizon (2011)