Abstract
The merging of space and time proposed by Minkowski in 1908 is still sometimes misinterpreted as a sort of four-dimensional hyperspace of which time is the fourth dimension, analogous to the other, spatial dimensions. An inevitable consequence of this view is that the future events somehow exist prior to, and independently of, human awareness and that what we call “becoming” is “merely a coming into our awareness” (A. Grunbaum). However, an attentive inspection of the space-time diagram and of Minkowski's formula for the constancy of the world interval shows that the events contained in the absolute future of any frame of reference areintrinsically unobservable not only within this system, but also by any other conceivable observer: consequently, there is no reason to postulate their existence.
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