Sentence examples for so difficult to prognosticate from inspiring English sources

Why is it so difficult to prognosticate?

Why is 2015 so difficult to predict?

Comedy can be notoriously difficult to prognosticate, but given the above, there seem to be clear frontrunners for the fall schedule.

It is difficult to prognosticate how much direct access to genomic test results patients will have because of two developments.

Modifier genes, most of which are unknown at this time, can result in patients with the same combination of mutations showing different symptoms, even within the same family, making it even more difficult to prognosticate.

Why, he asks, is it so hard to prognosticate the performance of artists, teachers, quarterbacks, executives, serial killers and breeds of dogs?

"It was so difficult to access materials.

This was not so difficult to understand.

It's not so difficult to imagine.

So difficult to choose.

Why are stereotypes so difficult to eradicate?