The scheme could handle somewhat complicated functions while keeping the data encrypted, but still not very complicated ones.

这个方案要能够在保持数据密保的同时操作稍微复杂的函数，但函数还不能太过复杂。

While step 1 is the most important in the grand scheme of things, step 2 often leads to the most difficult discussions with the business.

虽然步骤1是这个大计划中最重要的一步，步骤2常常导致业务方面最困难的讨论。

The third option would see everyone with sufficient means pay into a mandatory state insurance scheme; payments could be made while working, in retirement or on death.

第三种选择就是每人都必须购买政的保险计划，在工作、退休或者去世的时候支付都行。