I don’t know if this is time travel or not, but it certainly violates causality when the time for thiotimoline to dissolve in water is minus 1.12 seconds.
Mr. Asimov, tell us something about the thermodynamic properties of the compound thiotimoline.

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  1. “Thiotimoline” by Isaac Asimov, Astounding, March 1948.
    2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . written by Isaac Asimov