Miju was the one-year-old daughter of Jonathan Gerrish and Ellen Chung,
Ah, I remember this. Yosemite is my home territory; I've been backpacking there fifty years.
The mistakes they made are beginner's; just a few chats and smart people won't make them. But outdoorsy types will be curious, ask questions, and learn fast. “City folk” won't, typically.