First, unilinear evolution, the classical nineteenth-century formulation, dealt with particular cultures, placing them in stages of a universal sequence.

The verdurous pasture...

In schools it is common for teachers to confiscate electronic games and other distractions.

Although non-destructive reads are theoretically possible with FeRAM, the process - requiring illumination of the memory cells with UV light - is completely impractical for most purposes, favoring the more-practical (but destructive) method of forcing every cell to 0, seeing which cells produced a tiny current pulse, and writing back 1s to those cells.