Unfortunately, I don't want people to learn answers by heart.

I once had an Skype interview with "teleprompter" interviewers who had no idea what they where reading and what to expect ...

> I would fail unless it was an open-book or with-laptop test. :-)

The idea is to give orientation and an incentive to open a book...

update

But from a certain perspective you are right. I'm somehow interviewing my colleagues ...