Only have a 1-year-old, but I can imagine reading Narnia to them when they're a bit older. Those books are amazing! Currently mostly reading Miffy (a classic in the Netherlands) and Peppa Pig ;)
I'm in the same boat with 2-year-olds. It's been years but Narnia is very Christian / bible coded right? I guess it's fine to read to a little one, but I'd be kind of hoping that doesn't become their favorite book series. Or am I overreacting? I'm not letting my kids near Ayn Rand when they are older :p. Phantom Toolbooth would be great.
With "flat disks" I suppose you mean the temporomandibular joints, those are like small cushions inside your jaw joint, just where your lower jaw meets your skull, you have one on each side.
It sits between the lower jawbone and the skull bone so they don't rub against each other, it sort of slides along the jaw when you open your mouth.
A real one isn't a flat blue plate of course, it's a pale rubbery pad that curves over the top of the jaw bone like a little cap.
I suppose I could of done a better visual demonstration and I will look into improving it when time allows it, thank you for pointing it out.
I agree. I work at a big insurance company with millions of online visitors each year. By A/B testing, we improve our services. A/B testing error messages has been a huge help for us. We can't ask users directly what they need: most users don't know what they need. That's why we do both qualitative (user research, online feedback forms) and quantitative (A/B testing, fake door testing, etc.) research.