3 ms·Sounds like one has to prove "a negative" https://youtu.be/n-kXok4tznU?t=26 https://youtu.be/n-kXok4tznU?t=26by teekert 3y agoSounds like one has to prove "a negative" https://youtu.be/n-kXok4tznU?t=26 https://youtu.be/n-kXok4tznU?t=26