People should have rules of engagement when facing an alien. I just watched The Day The Earth Stood Still and I thought they did mistakes a normal human being should never do.

In the event that an alien arrives on earth:

Rule No. 1
Send a scout, don't send an army of marines, police, swat, or scientists to interact with the extraterrestrial life form.

Rule No.2
DO NOT shoot the alien when it approaches a chick or anyone for that matter. A gigantic supermodern badass robot might appear and pulverize you.

Rule No. 3
If the alien speaks English or any other language understandable to mankind, LISTEN to whatever it has to say especially if it has a badass robot standing in front of its ship, ignoring it might cost the lives of everyone in the planet.

Rule No. 4
DO NOT try to capture and interrogate the alien. Well, it might have powers that could take down everyone in the building. Oh and you'll never know if it can communicate with that badass robot through telepathy to help it escape whatever prison you put it in.

Rule No. 5
If the alien had a robot that could take out the entire electricity on Earth, why try taking it back to whatever research lab you have? It's just too omnipotent for our technology to contain it.

Rule No. 6
If you insisted on taking the badass robot for research and managed to do it somehow, please do research it within a 100 mile radius, especially if it has lasers for eyesight. C'mon, do you seriously want to stand within its range of sight especially when it just destroyed a couple of missiles (and tanks) with those lasers?
Who gave the idea to study it right in front of its face? Gilaka?

Two cents for the day.