We watched FINDING NEMO again a few days ago. And this exchange (about children and new experiences) really caught my attention.
Marlin: How do you know if they're ready?
Crush: Well, you never really know...but when they know, you'll know, y'know?
Man, I could tell stories backing that up! All unschooly and AP, naturally. Suffice it to say, I'm finding more and more reasons to believe in letting the child lead. Sure, they'll learn/do things with guidance and/or pressure. But the results are so much easier, quicker, and joyful if it's done on their timetable.