> The fact that the lowest level of interaction you can have with a computer is writing memory. While this is true as far as it goes, it's worth keeping in min

> The fact that the lowest level of interaction you can have with a computer is writing memory. While this is true as far as it goes, it's worth keeping in mind that not all memory controllers are equally low-level. Some of them expose cache architecture or the rectangular organization of DRAM in interesting ways.