a system of options because only the beginning of a change or initiative can be planed in detail. Leaders must make extensive preparations for all possible outcomes. No plan of operations extends with certainty beyond the first encounter with opposition. A strategy is a system of expedients, a means of attaining an end. Moltke was suspicious of rigid, inflexible, and comprehensive grand strategies and theories. Planning should however be very detailed and take into account multiple variables and contingencies.
from Prussian general Helmuth von Moltke the Elder