workshop presentation file

i presented about daily test by hudson at Nulab, TerraSky and Shanon workshop yesterday.

this is the presentation file at that time.
https://docs.google.com/present/view?id=0AbDvtUF_P-4uZDl0cGo4aF82aG5md2Q5Y20&hl=en

first post

magnet have an attractive force and a repulsive force.
the world is composed of two sides.