Our readingWhat is a korrent?
There is no threshold of vocabulary to cross before speaking begins; the change is a decision, not a level reached.
Drawn from what Benny Lewis said
What this subject means
language learning How an adult picks up a second language: input against speaking practice, immersion against slow habit, and whether a teacher can do it for you.
In the views onlanguage learningunder our view: Speaking starts before you are ready, and what stops people is embarrassment rather than vocabulary