Postmodern?

My readings have taken me past more than a few post-modern process theologians tonight. Why do we hide things behind hard-to-understand titles and concepts? When I look at Jesus' life, the first thing that jumps out is the simplicity. By simplicity, I don't mean unimportant or trivial. Quite the contrary. Jesus had this way of communicating deep, eternal, and relevant truth in less than two sentences. (eg. If you forgive others, God will forgive you. Mt 6:14). Here's a thought: if you can't explain it in two sentences, you don't know it! I am stopping before you start counting my sentences.