Tacit bargaining success depends on preparation before crises arise. [causal]
While the main burden of this paper has been that tacit bargaining is possible and is susceptible of systematic analysis, there is no assurance that it will succeed in any particular case or that, when it succeeds, it will yield to either party a particularly favorable outcome compared with alternatives that might have been available if full communication had been allowed. There is no assurance that the next war, if it comes, will find mutually observed limits in time and of a sort to afford protection, unless explicit negotiation can take place. There is reason, therefore, to consider what steps can be taken before the time for tacit bargaining occurs, to enhance the likelihood of a successful outcome.
Thomas C. Schelling, The Strategy of Conflict, loc. 197