Welcome to YarrowStalk.ORG

This website is devoted to the YO, the yarrowstalk oracle of the I Ching
and its connection to chaos theory

Provided as a service by Ralph Abraham and the Visual Math Institute


  • The Phases of the Moon
    Dates and times of the New moon and quarters
  • True Local Time
    How to compute true local time from longitude
  • The I Ching, Micro Edition
    A new version, macimally concise
  • The YO divination ritual
    All about the all-important stick handling
  • Graphical oracles
    Strategies for web-based divinations
  • Other works by Ralph Abraham
    Books and articles on math, pure and applied
  • Related sites
    Links to like-minded sites

  • Revised 11 Aug 2003 by Ralph Abraham