(A) Evolution of the log (for display purposes) of the average search time with the two normalized scales of the Mapless search scheme . The minimal average search time is 534 a.u. (B and C) Evolution of the average search times with temperature (B) and memory time (C). (A–C) Searchers start randomly inside a circle of 2λ radius, i.e., searchers may start at any radius between 0 and 2λ. Note that for a memory of 25 a.u., the average search time is 5,616 a.u. (D) Comparison of the evolution of the average search time with distance for one source (black) and for two sources (red). (B–D) The points are the results of the simulations, and the lines are visual aids.