The Higgs Boson was confirmed based upon a statistical observation and now most particle physicists believe the standard model to be accurate. I don't see a problem with claiming something is a law if the statistical analysis supports the claim. Even our own existence is based upon statistical interactions with photons. If you don't believe that, turn off all the light in your bedroom tonight and tell us tomorrow if you could still see yourself in the mirror.
I think people use "laws" out of optimism--they really want to improve our predictive powers and "wish" that they could come up with a black-or-white "law" to help out. Of course, as you say, the world is shades of grey :)
Drones are, in essence, flying autonomous vehicles. Pros and cons surrounding drones today might well foreshadow the debate over the development of self-driving cars. In the context of a strongly regulated aviation industry, "self-flying" drones pose a fresh challenge. How safe is it to fly drones in different environments? Should drones be required for visual line of sight – as are piloted airplanes? Join EE Times' Junko Yoshida as she moderates a panel of drone experts.