It is to be feared that the observer's power of interference doe snot suffice to make him wholly master if his fate. For there are other observers, employing similar capabilities. While our friend is in bed, dreaming of the happy possibilities of his future, some enerm, afflicted by this mania for intervention, may proceed to fire the house and reduce those probabilities to might-have-beens. [They would remain always, of course, entities in the substratum past of Time 2, but entities never encountered by field 1]. And, if the observer may owe his time 1 end to the intervention of other observers, it is fairly certain he owes his beginnings to nothing else. ~Beforehis birth he can be nothing but a probablility in the future of the race.