Not Accuracy but Sensitivity of Virus Test

The problem with tests is that they were not supposed to be accurate. I don't really understand this.
They only need a positive or negative result, so why need to be accurate? The correct term should be sensitivity.
The tests are only sensitive to a certain concentration of virus.
Some tests are more sensitive compared to others so can give a positive result earlier. The less sensitive tests can't.
It is not that they are useless, it is just that it needs to wait longer. Even the most sensitive test that we have can only give 80% accuracy, which means that it is still possible to completely miss a recently infected person.
The best way is still to do multiple tests at a certain interval depending on the incubation period of the virus.
The most sensitive can give confidence for a longer period compared to a less sensitive tester. That is all.
So you can still use rapid tests, but need to test daily for example. So never abandon rapid testing.

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