With this simple discovery, everything fell into place. If honeybees are sensitive to radio, then any electrical device can potentially contaminate experiments. Hand radios are in widespread use for communication between observers in animal behavior studies. All it takes is for the pattern of communication to be correlated with the features being tested, and the behavior of the bees will also show a correlation with those features. Experiments on sensitivity to magnetic fields are particularly questionable now, given their reliance on the use of strong electromagnets in the immediate vicinity of the hive.