svoid test_ProbabilisticDistanceBasedLookup() {
  new L<WithProbability<Double>> out;
  new ProbabilisticScheduler scheduler;
  NavigableMap<Double> map = listToKeyAndValue_treeMap(ll(
    1.0, 2.0, 3.0, 4.0, 5.0
  ));
  
  ProbabilisticDistanceBasedLookup lookup = new(scheduler, map, 
    x -> out.add(withProbability(scheduler.current(), x)),
    3.5);
  lookup.run();
  scheduler.run(50);
  
  assertEqualsVerbose(str(out), str(ll(
    withProbability(.67, 3.0),
    withProbability(.67, 4.0),
    withProbability(.4, 2.0),
    withProbability(.4, 5.0),
    withProbability(.29, 1.0))));
}

Began life as a copy of #1031997