It can never reliably measure what everyone actually watched or heard.
In other words, a quantum state can not be measured reliably.
But many researchers doubt that an effect can be reliably measured.
They can be made to reliably measure flow down to 1% accuracy.
This is another way to say that quantum information cannot be measured reliably.
And we still need to develop blood tests that can more reliably measure a woman's hormone levels.
Additionally, this cannot be easily and reliably measured in the field with living birds.
However, despite its complexity, it can be treated as a unit and measured reliably.
The effects of such exposure have not been reliably measured due to the extremely low doses involved.
In other words, quantum states cannot be measured reliably.