“Ganesh,” which runs through Monday at the Public Theater, is also about the difficulties and anxieties of putting on this unlikely play, and it is filled with scenes in which its actors argue passionately about its point and purpose. You’ve been there before, right?

Perhaps this is the place to point out that all but one of its five cast members are what is described in the script as “intellectually disabled.” I’m sort of sorry to disclose that last bit of information (though you would have already known it if you were aware of Back to Back’s history and mandate).

If you go into “Ganesh” as a blank slate, it will take you a while to put your finger on how these performers (all male) are different from your run-of-the-mill professional actors (if there are such things; “Ganesh” makes you think about that too). And by the time you have, you’ve come to appreciate the stuttering but confident step of one or the thick speech of another as an individual element of style, to be brandished and exploited by its possessor.

These men with disabilities — Mark Deans, Simon Laherty, Scott Price and Brian Tilley — are portraying men with disabilities. Mr. Tilley’s character is both the author and the title character of “Ganesh.” There is some dispute about who will assume the other roles, which include a Jewish concentration camp refugee, a Nazi guard and Hitler. The final casting, as it develops, is resonant with implications.