ABSTRACT
MacPherson’s principle (with other incarnations as Murphy’s Law and Sod’s Law, and qualified by O’Reilly’s corollary – that MacPherson was an incorrigible optimist) is the law of cussedness, that if something can go wrong, it will go wrong. It is liable to manifest itself in participatory workshops. Certainly, something is always wrong or goes wrong. On top of that, as a facilitator one makes ghastly mistakes [see 8].
