But there is a single company in charge of the service... if that company disappears or the company servers shut off, your messages will disappear (just as it happens when twitter shuts off).
By the way, I would recommend any programmer interested in physics "The Road to Reality" by Penrose. I think that's a very challenging book, that can be interesting for programmers, even if it's not about programming. Compared to that kind of material, GEB is very, very light.
I found it light, and boring because of how light it was. I had studied Gödel's theorems, etc., so I really could not take the pace for explaining the logic stuff (most of the book) in GEB.
I still don't believe you. So the numbers are made up? "15 minutes" -> "entire planet"? How much for 10 minutes? And for 1 minute? Is that obvious too?
So you think it's very obvious that it's impossible to build a chatbot that speaks chinese for 15 minutes in a computer like the one I'm using now (even one that claims to be a child for example). And why couldn't we just clone a Chinese person brain and say it's a computer? Why do you think a brain snapshot would require the size of a planet?
" It's trivial to show that a Chinese Room that could converse for more than 15 minutes would have to contain more elementary particles than the entire planet."