According to some astronomers, Earth is struck by a meteorite large enough to cause an ice age on an average of once every 100 million years. The last such incident occurred nearly 100 million years ago, so we can expect that Earth will be struck by such a meteorite in the near future. This clearly warrants funding to determine whether there is a means to protect our planet from such meteorite strikes. The reasoning in the argument is most subject to criticism on the grounds that the argument ['presumes, without providing justification, that some feasible means can be found to deter large meteorite strikes', 'makes a bold prescription on the basis of evidence that establishes only a high probability for a disastrous event', 'moves from evidence about the average frequency of an event to a specific prediction about when the next such event will occur', "presumes, without providing justification, that the probability of a chance event's occurring is not affected by whether the event has occurred during a period in which it would be expected to occur"]