Kanban was originally designed for production lines in car factories, so it works. If you go to any McDonalds and look at the screens in the back you'll see orders represented a lot like tickets.
In Agile, "points" are just an abstraction around work to try to normalize it in the same way that every burger+fries combo should be roughly equivalent.
In Agile, "points" are just an abstraction around work to try to normalize it in the same way that every burger+fries combo should be roughly equivalent.