In a nutshell, pooled testing allows up to 10 tests to be pooled together. So if 9 healthy people are pooled with 1 truly positive test, all 10 tests will give a positive result.
Just another Deep State way to control spikes as needed for political control.
They get to decide, which areas of the country are spiking, whenever they want by using more or less pooled testing.
https://www.thelancet.com/journals/eclinm/article/PIIS2589-5370(21)00308-4/fulltext
Either that or now they have to test every person in the "positive" pool.
Now, we know they're not going to do that but they will throw the entire pool into the "positive cases" ticker on TV.