Rapid and Reasonable?

In Science, speed is useful but it shouldn't be the only consideration. The limitations of the rapid lateral flow test used in the UK for Covid-19 are well-known. More doubts are now arising about the test's utility for picking up asymptomatic infections, as the countries (England, Northern Ireland, Scotland and Wales operate somewhat differently) emerge from lockdowns (https://www.theguardian.com/world/2021/apr/15/rapid-covid-testing-in-england-may-be-scaled-back-over-false-positives). Guess what! The rapid test (especially when carried out by the general public rather than health professionals), has a high incidence of 'false positives'. In places with low Covid rates, a few as 2-10% of the 'positive' results are accurate. People are consequently now asking, whether it is reasonable to expect all symptomless people in England, with a positive lateral flow test result, to self-isolate before getting the confirmatory PCR result. Getting data back from the PCR tests can take several days. The contacts of the 'false positives' would also have their lives disrupted. This just confirms the inappropriateness of the lateral flow test for monitoring 'silent' Covid infections. Clearly, people have been too impressed by the test's speed and simplicity.