David L. Willson writes: > - Every ray must be perpendicular to every other ray. > Clarifiers, if needed: > - "A ray is not considered perpendicular to itself, so a koan >with only one pyramid cannot have the BN." (you need this, of course as per the obvious recent discussion re ambiguity; I'd probably default to mastering it with single-ray koans = true, myself, but that's my bias). Needed clarification: are overlapping rays considered the same ray or different rays? This is, clearly, really important -- with it, a true koan can have any number of pyramids > 1, without it, it can only have 2 or three pyramids. -- Joshua Kronengold (mneme@(io.com, labcats.org)) |\ _,,,--,,_ ,) --^-- "Did you know, if you increment enough, you /,`.-'`' -, ;-;;' /\\ get an extra digit?" "I knew," weeps Six. |,4- ) )-,_ ) /\ /-\\\ "We knew. But we had forgotten." '---''(_/--' (_/-'