Before revision:  Specifically, we prove that under the intermittent model, in which detection is not possible while moving ballistically B\'enichou et al. Reviews of Modern Physics, 2011 , this strategy optimally finds sparse targets of any size and shape.
After revision:  Specifically, we prove that under the intermittent model, in which detection is not possible while moving ballistically  , this strategy optimally finds sparse targets of any size and shape.