The software that implements that probabilistic approach was intentionally written by programmers, and may well be very complex. The analogy would be that your

The software that implements that probabilistic approach was intentionally written by programmers, and may well be very complex. The analogy would be that your individual neurons don't really understand this text, but you do. The organization of those neurons is where most of the complexity lies. So, unless you have lots of neurons, lots of time, and lots of room to terminate mistakes, chances are you can't build a brain that understands this text without first knowing how to connect all those neurons.