It's really funny, I've read this essay before a long time ago and it's really interesting playing back the many times both in realising it in retrospect and having seen it playing out before my eyes, that the last part really comes to the fore

    > One final point: I expect none of you to really get what I’m talking about here, because this principle also applies to itself. But I fully expect I’ll get the occasional email saying “Oh! so that’s what you meant.” or “Why didn’t you tell me that?” I did, but you can’t tell people anything.

In my youthful naivety I thought I understood this, but now years later I can more deeply appreciate the message that you really can't tell people anything