In the scene Jordi wakes up after his surgery, when he looks at his leg, the position of him on his bed changes between shots from relying on the bed to lying down. See more
In order to appreciate how other people might be feeling, you have to be able to understand your own feelings. And that gets tricky, especially since most kids my age work hard to pretend they don't have any feelings. Feelings just aren't cool, unless you're in a coma, like me. In which case feelings are all you've got.