Sexual Perversity in Chicago and the Duck Variations; Two Plays Book

I've read two other Mamet works (Oleanna & Glengarry Glen Ross) and thought they were terrific (especially Oleanna). So I was excited to read this book, which contains two plays. The first is an examination of modern relationships, and despite the title, it's not really about sex; although it is framed through modern views about sex and discusses the impact sex has on relationships. The play focuses on four characters: Bernie (a slimy lothario), his friend Dan, Deborah (whom Dan begins dating), and Joan (Deborah's friend). The play consists of a number of short scenes that alternate between the men by themselves and women by themselves discussing modern sex (fetishes, likes & dislikes) and relationships, and scenes tracing Dan's and Deborah's relationship (from meet-up to break-up). Mamet's point about relationships and their difficulty - whether the sex is fetishized or otherwise - is none too subtle. The second play stretches across fourteen short scenes where two old men sit on a park bench. The majority of their conversations revolve around the ducks they are watching, with a subtext of how the duck behaviors also speak to human behaviors (leadership, friendship, death, etc). Overall, I found both plays to be underwhelming, especially given my prior experiences with Mamet's works. There is no subtlety in Mamet's messages, and I felt both plays lacked depth (because of both content and length). This is a pass for me.