rien

Yeah, I wouldn't take a paved street on a bike either

Yes ! Have you tried asking nicely ?

Let's start by fining them ^^

I never dream about trains - Cass McCombs (Deezer)

Peace Train - Cat Stevens (Deezer)

Train In The Rain (Album Version) - Bruce Cockburn (accoustic) (Deezer)

You could also say that it chooses what will be the next word it will say to you. It has a few words to choose from, which it has selected in relation to the previously spoken words, your question and previous interactions (the context). The probability you're talking about (a number) could also be seen as it's preference among those words. I'm not sure the probability vocabulary/analogy is necessarily the best one. The best might be to not employ any analogy at all, but then you have to dig deeper into the subject to form yourself an informed opinion. This series of videos explains it better than I do : https://www.youtube.com/watch?v=aircAruvnKk&list=PLZHQObOWTQDNU6R1_67000Dx_ZCJB-3pi