Effectiveness of greedily collecting items in open world games
  Since Pokemon Go sent millions on the quest of collecting virtual monsters,
an important question has been on the minds of many people: Is going after the
closest item first a time-and-cost-effective way to play? Here, we show that
this is in fact a good strategy which performs on average only 7% worse than
the best possible solution in terms of the total distance traveled to gather
all the items. Even when accounting for errors due to the inability of people
to accurately measure distances by eye, the performance only goes down to 16%
of the optimal solution.
