Quantum Temporal Indeterminacy

Chapter 22 - Quantum Temporal Indeterminacy Portent The strongest argument aginst FTL, against any kind of superluminal signaling, against spacelike causality in general, is the threat of temporal paradox, a closed causal loop in spacetime that denies its own causality. Yet here we have a metaphor for spacelike causality which deftly avoids temporal paradox by collapsing the elements of such a closed causal loop into the coin basis in which the loop is indeterminate - no paradox even when we tried to create one. An objective quantum measurement mechanism that requires spacelike causality.