银行援救项目关乎谁来支付成本，关乎银行系统需要多久才能恢复常态从而提供正常的服务。
Bank bailout program is about who would pay for the cost and how soon the banking system can recover to provide normal services.
IT 系统的用户（如银行出纳）经常知道业务模型中的粗粒度服务。
Often, a user of the IT system (such as a bank teller) is aware of the coarse-grained services in the business model.
如同无银行者需要现金服务企业，现金服务企业也需要银行：如果不能使用支付系统，他们就不能结算支票或汇款。
Just as the unbanked need MSBs, so MSBs need Banks: without access to payments systems, they cannot clear cheques or wire cash.
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