> the supernatural events described on stage are very difficult to pull off even with modern effects. But they were impossible with Jacobean setups

Speaking generally, as a former theatre professional, using onstage "effects" is less effective than firing the audience's imagination, and inviting them to do the work - which, of course, Jacobean artists were well able to do, and their audiences arguably more prepared to accept. The best plays - and I do think Maccers is among them, although the three productions of it I've been in were mediocre to dire - give huge scope for that.

This was a wonderful article, that nails what's wonderful - and frustrating - about the show.