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Chemistry

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  • $\begingroup$ Related question on WorldBuilding SE - A poison that only works if you know it is there $\endgroup$
    – Gaurang Tandon
    Commented Jan 14, 2018 at 15:02
  • 1
    $\begingroup$ Yeah, could be :P Except that it's quantum mechanics while we are on a macroscopic scale, so, no chance of it ever existing :P $\endgroup$
    – Gaurang Tandon
    Commented Jan 14, 2018 at 15:11
  • $\begingroup$ Most poisons will also make you ill at lower doses than the lethal dose. So, a very careful person can discover many poisons by being very cautious about the dose of anything they eat that has unknown qualities. This is presumably how ancient societies got to know so many poisons. $\endgroup$
    – matt_black
    Commented Jul 10, 2018 at 23:23