> On Jun 7, 2017, at 23:19, Ali Bahmani <ali...@gmail.com> wrote: > > Why do you think traditional origami kept spreading and transcending > through hundreds of years despite the diagramming system not being around > until the mid 20th century?
Because origami was also used in shinto rituals and you don't need diagrams to remember most of them. Jean-Christophe
