I’ve had people tell me that the woman stays at 73 Yards because that’s the range of the TARDIS’ perception filter, but if that has ever been mentioned on the show, I’ve missed that little tidbit.
Kate mentions this at the café as the distance where a person with 20/20 vision can’t make out any facial details anymore. But there never was mentioned any relation to the TARDIS perception filter.
Stock. Now with bilingual support in iOS18 and the smart completions, e.g. for math equations, it’s becoming even better.