ShaggyJebus wrote...
Look at the alien's tail and teeth and claws - the creature clearly is designed for battle, to harm others. It probably evolved on a planet full of fighting, with instincts that tell it to fight and kill. It seems improbable that such a creature could have evolved mentally so much that it could build a spaceship a thousand times better than our own but not evolved into a peaceful form, without the deadly claws and teeth and tail.
My guess would be that the alien had snuck aboard the spaceship and killed the crew. The ship had coordinates for Earth inputted, so that's why it came to our planet, and it took the creature three days to figure out how to get out of the spaceship. That's why there was no immediate response. The alien is probably hostile and wants to kill us humans.
Nice theory, but I would have to disagree.
Assuming I was in charge, I think this would happen:
The creature would, logically, step out into the open and stop to size us up as we are sizing it up. While I DO agree with your assumptions that a creature with that many sharp objects on it's body is probably most suited for warfare, I would like to apply Hierarchy theory here.
Simply put, what if that thing was simply a trick or a test, something that LOOKS scary as fuck sent out to gauge our reaction. What I would do then is grab a weapon, grab some guards, and slowly approach, carefully staying out of reach of the tail. From there, I would attempt to communicate.
Should it attack, we would render it a random assortment of bones and body parts. Then I will ask for a volunteer to try to enter the ship, and if no one steps forward, do so myself. and hope I don't get fried.
If it does not attack, and responds in an alien tongue, I will keep a weapon trained on it and try talking again. This process will repeat until either scenario A or C occurs.
If it does not attack, and responds in English, we shall have a nice, long conversation that hopefully does not involve us surrendering.
Should it mention surrender, the entire military force present will chunk the fucker and storm the ship before the doors can close so we can salvage technology.