The cleverness of this approach is that the disk's stylus can sit in the middle, and most files, on average, will be fairly nearby: That's how averages work, after all.
The cleverness of this approach is that the disk's stylus can sit in the middle, and most files, on average, will be fairly nearby: That's how averages work, after all.
这种方法的聪明之处在于磁头可以停在中间，并且多数文件的位置都据此不远。这里的不远，是就平均值而言的。