While a storage hierarchy arises as a compromise between accessibility bof data and cost of storage,the user in the future will not want to even be aware of its existence since his focus is on problem solving.

• 存储器分级结构折中地解决了数据访问速度与存储成本间的矛盾，用户在今后将淡化这样的观念，而更多关注问题的解决。