Because the basic controls that prevent us from harmful outcomes were not observed. Did you read nothing else I wrote?

but animal trials only exist as a precursor to human trials. If the human trials have successfully concluded, animal trials are redundant. The idea of having skipped animal trials is worrying while doing the human trials, but if the human trials complete successfully, then the worry is no longer founded.

> If the human trials have successfully concluded

They have not.

yes they have. what are you talking about?