That's a good question. I'd say when the critic gives no concrete reasoning for what is expressed in the review. What makes a book, film, play, or television episode bad? State what elements make it bad. It's not rocket since. The absence if this is justification, I would say.... Just saying.

Marvellous work. I like how you used the challenge word. You certainly know how to write a compelling story. I can personally feel the actor's dilemma. I am an IMDb listed actor. I haven't acted in quiet a while...

Thanks for sharing your talents.