Presumably showing them that these little pieces of paper are cheap and effective tests make it easier to believe that people elsewhere are performing tests rel

Presumably showing them that these little pieces of paper are cheap and effective tests make it easier to believe that people elsewhere are performing tests reliably. If I showed someone how to use these paper tests and showed how reliable they were, then showed a video of someone testing ocean water they, just might, just barely, hopefully might be more likely to believe me.