Strategically Placed Obstacle Near an Exit Can Speed Evacuations (scientificamerican.com)

1 points by duckbridge 17y ago ↗ HN

1 comment

[ 3.1 ms ] story [ 6.6 ms ] thread

RiderOfGiraffes 17y ago ↗

See also http://news.ycombinator.com/item?id=795329 where there is significant discussion.