Facing dramatic changes, organizations do not only have to be reactive
and pre-active, but also pro-active, thus linking anticipation and ac
tion, To transform anticipation into action through appropriation, sce
narios should follow four conditions: relevance, consistence, likeliho
od and transparency. For that purpose, the use of simple formal tools
like structural analysis, actors' strategy analysis, morphological met
hods or probability analysis, illustrated with a case study on the ste
el and iron industry, is useful to avoid entertainment and to explore
all possible scenarios.