You definitely should read the whole article. The author says that wrapping ideas in words at later stages is important to complete the process of inventing. It's all about the initial processing, to free your mind from language's constraints, because language is indeed constraining. It feels like multiplexing numerous parallel streams of thoughts into a single spoken channel. You have to do it at some point, but only when you are confident you know what those parallel streams carry. Otherwise you will get mess.