Hi and thank you for the feedback, I am indeed using the definition a bit loosely.
In this context, Typo as in a typographical error - an error relating to printed text.
Whether that's a grammatical error in the text, or just a misspelled word in the text.
Forgive me if I'm wrong, but since you're on the Asian servers, I'm assuming that you might not be a native English speaker. And might therefore not see the grammatical error of having missing conjunctions or determiners like this.
Conjunctions are not optional, disregarding them is a common mistake that leads to a very "unnatural" way of speaking English. "Now you know its purpose." is a perfectly fine independent clause (sentence) on its own.
The need for a conjunction comes when you use it as a subordinate clause and add it onto another independent clause to form a complex sentence. In which case you would also need to add a conjunction that can connect them together.
Without a conjunction you can't correctly express the reference of the noun in the context. Namely the "now", which references the past where we didn't know its purpose, not that we're learning something new in the "now".
"
Now that you know ..." as opposed to "
Now you know ..."
Hope this helps
