Hi Brian, thanks for reading and feedback. Hope the articles are both informative and entertaining. I always like to see readers' feedback and participation.

The reason the concept of "row" was mentioned is because that is how the controller talks to the NAND and thus rows are specified in the NAND specification for the NAND types I was referring to. This is explained in more detail in Part 6 (https://medium.com/solid-state-drives-ideas-knowledge-and-development/ssd-firmware-development-part-5-nand-operations-breakdown-6ffb9b106cd9).

Please let me know if you need further clarification.