It seems like we'd know by now (I mean here in the US) whether there are sounds that 1) can cause mild TBI symptoms and 2) are only just barely [0] detectable.

It seems like we'd know by now (I mean here in the US) whether there are sounds that 1) can cause mild TBI symptoms and 2) are only just barely [0] detectable. Mild TBI symptoms include [1]: - May remain conscious or may experience a loss of consciousness for a few seconds or minutes. - Headache - Confusion - Lightheadedness - Dizziness - Blurred vision or tired eyes - Ringing in the ears - Bad taste in the mouth - Fatigue or lethargy - A change in sleep patterns - Behavioral or mood changes - Trouble with memory, concentration, attention, or thinking I'm guessing that since this has hit the media via [1] and Pompeo's reporting, the "employee personal/performance problem" angle has been ruled out. 0. "subtle and vague, but abnormal, sensations of sound and pressure" -- https://china.usembassy-china.org.cn/ha-05232018/ https://china.usembassy-china.org.cn/ha-05232018/ 1. https://www.ninds.nih.gov/Disorders/All-Disorders/Traumatic-Brain-Injury-Information-Page https://www.ninds.nih.gov/Disorders/All-Disorders/Traumatic-...