With iodide, the solvate $\ce{NaI \cdot 3(CH3)2CO}$ can be formed, in which each $\ce{Na+}$ is coordinated by 6 acetone ligands via oxygen lone pairs, and the $\ce{I-}$ ions fill in the gaps between these octahedral units, being surrounded by the methyl groups of the acetones.
Randomization is a sampling method used in scientific experiments. It is commonly used in randomized controlled trials in experimental research.
Rationalization is a sociological term that simply means the substitution of logically consistent rules for traditional (or illogical) rules. One of the fundamental aspects of McDonaldization is that almost any task can (and should) be rationalized. The process of McDonaldization takes a task and breaks it down into smaller tasks. This is repeated until all tasks have been broken down to the smallest possible level.