I was going to cite stories about random walk simple robotics being used to clear mines in Afghanistan- think lawnmower powered beach balls. But apparently this

I was going to cite stories about random walk simple robotics being used to clear mines in Afghanistan- think lawnmower powered beach balls. But apparently this isn't as effective as I'd thought: https://news.ycombinator.com/item?id=4808061 https://news.ycombinator.com/item?id=4808061