Gracias Daniel,
Angular is good because it don't force you to follow any convention so you
have the liberty of doing things like you want. That could be a double-edge
sword. That liberty is good but sometimes it is hard to pickup some
conventions that are good to follow.
Your explanation was r
The difference between declaring stuff in the scope: {} vs just reading the
attributes inside the link function has to do primarily with whether we
want to keep track of the values as they change. Things declared in the
isolate scope will automatically get watches created to keep them in sync
