@anthracite Ask the facility the x-ray was taken at about their FOI process to get your own records. Often times they can e-mail a high-res scan of imaging taken.
@noxypaws In the case of programming, "Big O" is mostly adopting existing math terms because they fit, but a lot of the complex 'Big O math-theory' stuff doesn't actually help.
It really is as simple as my first toot, there's literally nothing more to it when discussing algo complexity.
http://bigocheatsheet.com/ is the 'building block' list for low-level algo components including storage to pick-and-choose.
@noxypaws Well it sounds like you're reading mostly a book approaching things from a hard-math perspective, which isn't usually helpful from a programming perspective?
From programming it's pretty straight-forward: "Soak it in wood." I.E. More log = better algo as long as you can understand how to implement said 'better' algo.