What wheelbarrows can teach us about world history

I use the example of the wheelbarrow to talk about some general points about the history of technology, and the limits to our ability to reasonably make sweeping generalizations about individual technologies. 0:00 Some people overestimate how necessary wheelbarrows are 3:53 Technologies are only obvious in hindsight 7:23 It's really hard to trace the origins of a technology 11:44 Technologies have context Thumbnail image: La aldeanita del clavel rojo Adolfo Guiard, 1903 Bilbao Fine Arts Museum Accession number 82/31 https://bilbaomuseoa.eus/obra-de-arte/la-aldeanita-del-clavel-rojo/ https://commons.wikimedia.org/wiki/File:Adolfo_Guiard_-_The_Little_Village_Girl_with_Red_Carnation_-_Google_Art_Project.jpg