2 points
The real question for me is what unit of distance would be used for the integer representation… It could take 1 meter, 1 Km, 1 Au, or even 1 Infinity to represent the distance between every person and the next. Also, are we using a linear or logarithmic scale?
This is not to mention the lack of info on how fast the train is going, and whether or not it’s accelerating.