It read and sorted the web in advance. When you type a question it is not searching the internet — it is searching the index it built earlier.
The drawing that proves the sentence above. It is the same card that is in the book.
Think of it as
a librarian who has read everything and points at a shelf.
For example
You type a question and answers appear instantly. Nothing went and read the internet just then — it had read it already.
This is one card out of 275.
The hundred words you meet most are free — the whole set, animated, in one file that works with no internet.
Volume 1 has all 275 in fifteen chapters, with Staying Safe the largest chapter on purpose.