Re: Hmm, I see an angle.....
Aside from that, how the plaintiff compares with others is not the relevant fact. What counts is how the accident changed her capabilities, and unless the new data can be compared with data from before the injury my reaction as a juror would be to pretty much ignore it in favor of relevant testimony about the injury and her actual capabilities before and after it occurred. Bringing in the Fitbit and a statistical analysis of currently collected data seems a flim-flam to put a gloss of science on a claim.