From Neil Gaiman's blog, the lamest method of divination I've ever heard of:
gyromancy - 1557, from M.L. gyromantia, from Gk. gyyros "circle" + manteia "divination, oracle." "A method of divination by walking in a circle till the person fell down from dizziness, the inference being drawn from the place in the circle at which he fell."
Top radical is 'field' (田), bottom radical is 'come between' (介), thus
'division of land', leading to the meanings of both 'boundary' and 'area'. Henshall
suggests as a mnemonic: 'Boundary between fields marks areas.'