man and once again alien want to destroy the earth . have i mention how i hate this stereotype . they always travel huge distance to destroy u or our planet we must be important while ) this time they be do it out of some silly ethical reason we be destroy the earth and so they will do it first no comment so here some logical mistake represent they take sample of the flora and fauna of the planet do it mean the nano bug will destroy everything . even the flora and fauna . if so why can not they take the sample and let the earth be . if not why do they need the sample . how far be their genetic engineering and their planet creation or rebuilding skill . nano bug eat pollution for example . or create more of endanger specie and so they be not endanger anymore . from an ethical point of view the alien be behave quite unintelligent too they have no responsibility whatsoever for either u and our plan or the life on it . they could provide u with good technology so we do not destroy the earth and can live in space if they feel some responsibility . but this wouldn not be such an dramatic movie and would it . send an ambassador out of the ship when it be surround by military be not intelligent at all and especially when he be not invincible . why isn not he wear a nano bug armor . they have knowledge of the human body and but just do not care to understand how we be think . the ambassador initially want to get to the un and so they have study u a bit after all ( never mind not understanding our concept of military ) . but they seemingly have no idea that the un be quite powerless they should have attend one of the g8 summit instead . or summon the big industry guy . and why be it the ambassador have always to go to the usa there be a un headquarter in vienna . the idea of send an ambassador v send their message on all tv channel and thus reach all people without even land and cause this panic . what do you thing be well . some other point represent they have study u for a while and decide to destroy u and suddenly change their mind because of what . i really couldn not understand why they would stop . do they believe we will change . do you . i think not without the give u some technology . the alien ambassador just look at some formula on a black board and know what it be and why it be wrong . i study informatics and have a lot of math you just can not know all the formula and even if you do you would not always recognize them and since there be different way to say the same . so bad script and the acting disappoint me too no point in watch this one .