By Bob Garver Poster credit IMDB “Mercy” was the  #1 movie at the box office on a weekend where the weather showed little in the way of mercy to much of the country. Hope you’re all safe out there. As if the weather weren’t enough of a disadvantage, “Mercy” is saddled with one of the stupidest cinematic premises I’ve ever seen. It takes place in a dystopian future where murder trials take the form of “Mercy trials,” suspects being strapped unsupervised to a chair in a tech-fi