Sure. And while certainly "possible", how likely is it that a 19yo college dropout (who wasn't studying medical sciences) was able to discover a technique that did so, after forty years of multiple multi-billion dollar companies researching the same (after all, the brave new world offered by her dream was hardly new or unpalatable to other players in her field).

And her actions demonstrated she had done no such thing. Buying, hiding, deceiving around traditional venipuncture machines, etc.

This is someone who "had a dream", had connections, and was determined and stubborn, in a bad way. Even now she, and one or two of investors, still believe she has been robbed and wronged, and that the world is worse off without Theranos.

The bar for inventing something new in medicine is not "Eh, if you squint, it sorta looks like it works, ship that shit."