It's standard practice for idiots. And apparently "Sloan Kettering experts." There are semi-supervised techniques to do stuff like this in a more systematic/au

It's standard practice for idiots. And apparently "Sloan Kettering experts." There are semi-supervised techniques to do stuff like this in a more systematic/automated way, but you still don't get anything for free: the outcome depends on the priors used to do the semi-supervised voodoo. In a generous moment I might assume this is what they meant, but it's still dumb.