- Appreciating data-types, their limitations and the perils of using casting them incorrectly helped me a lot in understanding about things I need to be careful about
- Are they going skip the concept of Pointers ? It's not wise to use them unless necessary but to be aware of the concept was very rewarding for me
- How will they teach multi-threaded programming? We're not quite there yet in JS.
If they switch to another language to teach stuff which JS doesn't support, they might lose their audience and so blind side a large set of them.