With a thousand points, you barely notice the delay. With a million, you're doing a million distance calculations for every single query. On a phone updating the map as the user scrolls, that's untenable.
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And what software?
Andrew Stanton has directed such celebrated animated adventures as Finding Nemo and WALL-E — as well as the live-action flop John Carter. Now, with the Colby Day-penned In the Blink of an Eye, he delivers interweaving vignettes about technology and human connection that stretch from a literal Neanderthal's struggle for survival to a contemporary anthropologist's search for work/life, to a far-flung space colony where mankind is taking bold new steps