Things that do not make sense

Neither the philosophical nor political views of the New Scientist are my cup of tea, but here the magazine gives a fascinating list, from 2005, of thirteen potentially important scientific anomalies. One of these is that the "placebo effect" is so tangible that a drug which blocks the action of morphine can also be shown to block the action of a placebo which the patient thinks is morphine. (Which to me suggests that the effect of the morphine may have been as "psychological" as that of the placebo . . . ) Another anomaly is that the early deep-space probes, Pioneers 10 and 11, seem to have been tugged slightly off course by an unexplained force.