It has some interesting obsevations, but there are times when it seems rather too much is being deduced from the available statistical evidence. This always struck me as a rather odd comment:
FIGURE 3MONTHLY ACTIVITIES JUL 1974 SEPT 1976

Of special interest as far as prophecy expectancy is concerned, is the summer-period of 1975 (see figure 3). According to the Society’s Yearbook 1976 the maximum number of active Witnesses in Holland during 1975 amounted to 29.723. These were registered in November. In the monthly bulletin, however, a high point of 30,000 Witnesses was noted during the month of august. (KM Nov. 1975; Feb. 1976, Dutch ed.) Upon my query on this discrepancy, the Dutch branch office answered this was due to late reception of the data from the congregations. The number stated in the Yearbook was correct, not the one from the bulletin. It is interesting to speculate on this ‘late reception’. Procedure prescribes that publishers should file their activities on specially designed forms through their congregations at the end of each month. As the graph for july 1975 indicates, there is either a striking low activity in that month or activities were not reported. The first possibility seems unlikely, in view of the urgency of the epoch and the significant difference in activity between july and august. In this case the difference was an ample 12%, whereas the average amounted to 5%. But why this late filing, as asserted by the Society? Could it be that a more than average amount of Witnesses were absent so they were unable to file their reports? Did they perceive this was a last opportunity to enjoy a vacation within the secular institutions, previous to Armageddon would temporarily discontinue this pleasure?