The most durable lesson in this record was delivered without a sentence. That is also the method the whole site is built on.
Each stop is a page in the graph. The order is an argument — but every one of them is also a door into the rest of it, so you can leave the path wherever it stops being useful.
Some things cannot be told. They can only be arranged, so that a person arrives at them on their own. An unexplained signal is a mirror — people see themselves in it. The frame is what turns it back into a message.