Good survey article apparently intended for design staff and supervision unfamiliar with the comparative merits of linear bearing systems.
While the article couldn't cover everything (hydrostatic bearings, alternative lining materials, machine tool survey, buy Vs build, prep for rebuild, etc), it omitted scraping assembly joints for correcting alignment and scraping bearing surfaces for geometry and fit. A good tech writer could have synopsized these sub-topics in a single paragraph - enough to plant a nugget in the mind of a technical decision maker.
Most folks with only a vague knowledge of scraping are unaware its niche applications, including accurizing the mounting surfaces intended for linear bearing assemblies. It would be beneficial if the decision makers were at least aware of these refinements and of source material, bibliographies, etc for further study should they be so inclined.