You aren&#x27;t giving false positives any credit. False positives can be DEVASTATING. If a test has 50, 75, 90% false positive rates, as many do - you are causing much panic for nothing.<p>If tests were 100% reliable and a simple pinprick.. absolutely, everyone should take one when they wake up and drink their morning coffee. But with the accuracy of tests today? Not so sure.<p>basically take any 100% healthy person. Run 500 tests on them. They will have 5-6 major problems via a false positive result.  Run more detailed invasive tests on those. Maybe you rule them out, maybe you get another false positive.  You could end up going through Chemo or some other &quot;cure&quot; for a disease you never had, and the &quot;cure&quot; could end up giving you real cancer.