Osa kuvista on kirjoittajan valmistamia.

Kaikkeus

Suuri paljastus

Maa
“The Blue Marble”. NASA/Apollo 17 miehistö (Eugene A. Cernan, Ronald E. Evans ja Harrison H. Schmitt). Public Domain.

Kuu
NASA, GSFC. https://science.nasa.gov/image-detail/amf-gsfc_20171208_archive_e001982/ Rajattu kirjoittajan toimesta.

“Star trail”
A. Duro/ESO. http://www.eso.org/public/images/potw1631a/, https://commons.wikimedia.org/w/index.php?curid=50432301 CC BY 4.0.

Evoluutio

Periytyminen

Pituusaineisto
Francis Galton. https://doi.org/doi:10.7910/DVN/T0HSJ1, Harvard Dataverse. CC0 1.0.

Lajien sopeutuminen

Pelikaani
Heath Warwick, Museums Victoria. https://collections.museumsvictoria.com.au/specimens/1388776 CC BY.

Töyhtötiainen
Carlos Delgado. https://commons.wikimedia.org/w/index.php?curid=41082567 CC BY-SA 4.0.

Huuhkaja
Rhododendrites. https://commons.wikimedia.org/w/index.php?curid=82194237 CC BY-SA 4.0.

Haukka
Alan Schmierer. https://commons.wikimedia.org/w/index.php?curid=49149910 CC0.

Flamingo
Valdiney Pimenta. https://commons.wikimedia.org/w/index.php?curid=6233369 CC BY 2.0.

Strutsi
Yathin S Krishnappa. https://commons.wikimedia.org/w/index.php?curid=38145796 CC BY-SA 4.0.

Liitokala
Pearson Scott Foresman. https://commons.wikimedia.org/w/index.php?curid=12014958 Public Domain.

Karppi
George Chernilevsky. https://commons.wikimedia.org/w/index.php?curid=77657476 CC BY-SA 3.0.

Sinitiainen
Francis C. Franklin. https://commons.wikimedia.org/w/index.php?curid=37675470 CC BY-SA 3.0.

Tikka
Joshlaymon. https://commons.wikimedia.org/w/index.php?curid=70700524 CC BY-SA 3.0.

Lajien muuttuminen

Vesimeloni
Albert Eckhout: een Hollandse kunstenaar in Brazilië. https://commons.wikimedia.org/w/index.php?curid=46653 Public Domain

Villitomaatit
Joseph Lofthouse, yksityinen kommunikaatio. CC0 1.0

Ihmisten synty

Darwinin pääskyt
Kiwi Rex. https://commons.wikimedia.org/w/index.php?curid=76752894 CC BY-SA 4.0.

Metsästäjä-keräilijä
Weltenbummler84 https://commons.wikimedia.org/w/index.php?curid=11183014 CC BY-SA 2.0 de.

Gorilla
Thurundir. https://commons.wikimedia.org/w/index.php?curid=84810598 CC BY-SA 4.0.

Simpanssi
Giles Laurent. https://commons.wikimedia.org/w/index.php?curid=134376867 CC BY-SA 4.0.

Oranki
Eleifert. https://commons.wikimedia.org/w/index.php?curid=3913620 CC BY-SA 3.0.

Ihmiskunnan historia

Eksponentiaalinen kasvu

Maailman väkiluku
HYDE (2023); Gapminder (2022); UN WPP (2024) – with major processing by Our World in Data. “Population” [dataset]. PBL Netherlands Environmental Assessment Agency, “History Database of the Global Environment 3.3”; Gapminder, “Population v7”; United Nations, “World Population Prospects”; Gapminder, “Systema Globalis”. https://ourworldindata.org/grapher/population

Trendejä

Maatalouden osuus työvoimasta
Our World in Data based on International Labor Organization (via the World Bank) and historical sources – processed by Our World in Data. https://ourworldindata.org/grapher/share-of-the-labor-force-employed-in-agriculture

Työtunnit
Huberman & Minns (2007) and PWT 9.1 (2019) – processed by Our World in Data. https://ourworldindata.org/grapher/annual-working-hours-per-worker

Kalorimäärä per henkilö
Food and Agriculture Organization of the United Nations (2024); Harris et al. (2015); Floud et al. (2011); Jonsson (1998); Grigg (1995); Fogel (2004); Food and Agriculture Organization of the United Nations (2000); Food and Agriculture Organization of the United Nations (1949); USDA Economic Research Service (ERS) (2015) – with major processing by Our World in Data. https://ourworldindata.org/grapher/daily-per-capita-caloric-supply

Valaistuksen hinta
Fouquet and Pearson (2012) – processed by Our World in Data. https://ourworldindata.org/grapher/the-price-for-lighting-per-million-lumen-hours-in-the-uk-in-british-pound

Energiankulutus per henkilö
Energy Institute - Statistical Review of World Energy (2025), Smil (2017) – with major processing by Our World in Data. https://ourworldindata.org/grapher/global-energy-substitution

Keskipituus
NCD RisC, Human Height (2017) – processed by Our World in Data. https://ourworldindata.org/grapher/average-height-by-year-of-birth

Äärimmäinen köyhyys
Michalis Moatsos (2021) – with major processing by Our World in Data. https://ourworldindata.org/grapher/share-of-population-living-in-extreme-poverty-cost-of-basic-needs

Elinajanodote
UN WPP (2024); HMD (2024); Zijdeman et al. (2015); Riley (2005) – with minor processing by Our World in Data. https://ourworldindata.org/grapher/life-expectancy

Isorokko
WHO (2011) – processed by Our World in Data. https://ourworldindata.org/grapher/global-smallpox-cases

Lukutaito
UNESCO (1957), UNESCO (1953), Buringh and van Zanden (2009), van Zanden, J. et al., UNESCO Institute for Statistics (2025) – with major processing by Our World in Data. https://ourworldindata.org/grapher/literate-and-illiterate-world-population

Demokratia
V-Dem (2025), Population based on various sources (2024) – processed by Our World in Data. https://ourworldindata.org/grapher/people-living-in-democracies-autocracies

Naiset parlamentissa
V-Dem (2025) – processed by Our World in Data. https://ourworldindata.org/grapher/share-of-women-in-parliament

Kaupungeissa asuva väestö
World Bank based on data from the UN Population Division (2025) – processed by Our World in Data. https://ourworldindata.org/grapher/urban-and-rural-population

Lentomatkustajat
Multiple sources compiled by World Bank (2024) – processed by Our World in Data. https://ourworldindata.org/grapher/number-airline-passengers

Avaruusvierailut
CSIS Aerospace Security Project (2022) – with major processing by Our World in Data. https://ourworldindata.org/grapher/cumulative-space-visits

Internetin käyttäjät
HYDE (2023); Gapminder (2022); UN WPP (2024) – with major processing by Our World in Data. https://ourworldindata.org/grapher/number-of-internet-users

Metakognitio

Reflektointi

Osa kysymyksistä on käännetty ja mukautettu seuraavista artikkeleista:

Frederick, S. (2005). Cognitive reflection and decision making. Journal of Economic perspectives, 19(4), 25-42.

Toplak, M. E., West, R. F., & Stanovich, K. E. (2014). Assessing miserly information processing: An expansion of the Cognitive Reflection Test. Thinking & reasoning, 20(2), 147-168.

Tarinat

Mukautumiskoe
Fred the Oyster. https://commons.wikimedia.org/w/index.php?curid=36619962 CC BY-SA 4.0.

Inspiraatiota
Eliezer Yudkowskyn kirjoittamat fiktiot inspiroivat osaa tarinoista. https://yudkowsky.tumblr.com/post/81447230971/my-april-fools-day-confession