I will add a comment here. IMO that early contact is more important when discussing forms than applications. Why? Application can't be practiced (not really) without a partner. If that includes even lightly resisted practice, there will be feedback to help get the technique more "right" (and another mind to figure out why it's not working right, when it isn't). Even if they don't get it technically "right", they are at least doing something that is close and is working, so there's useful learning going on. With forms (even 2-man forms), there's not that kind of feedback, so errors can still "work", but create problems in the long run, when transitioning to application.
This is why BJJ has been more able to use this model than arts that have forms. Especially since arts that have forms usually start from the form and progress to application, so if you mess up learning the form, you'll have problems with application.