on the one hand, i don't like the symptoms that suggest there is no good way to trust the release key. but is not your fault in the end. 11 green building materials that are way better than concrete. we prefer your request in writing so we can make sure all of your needs are met. do you want to get in the box? express wonder, ask questions big and small, and delight in investigating their answers. good to hear you enjoyed it! i won't give away the ending, but i am sure most people know. interesting discussion, a lot of food for thought. 