Technically, if you've got a bumpy dirt track a->c and a freeway a->b->c then the travel time on the latter route can be shorter.
Of course, they do get to dodge a major problem: That high-dimensional data is hard to visualise in an understandable way. Everyone knows what a map looks like, nobody knows what a clear visualisation of a set of 100-dimensional vectors looks like.
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Technically, if you've got a bumpy dirt track a->c and a freeway a->b->c then the travel time on the latter route can be shorter.
Of course, they do get to dodge a major problem: That high-dimensional data is hard to visualise in an understandable way. Everyone knows what a map looks like, nobody knows what a clear visualisation of a set of 100-dimensional vectors looks like.