"There's one thing you never put in a trap if you're smart. If you value your continued existence, if you have any plans about seeing tomorrow there's one thing you never, ever put in a trap... Me." At first glance, the Eleventh Doctor is highly energetic and very lively, although if this is just a result of his recent regeneration is currently unknown. He is extremely brash and unafraid to show his eccentricities, appearing to act alien. He is also easily agitated when people or objects do not do as he wishes them to, and will resort to physical confrontation and somewhat reckless behavior to achieve his goals. He has, like a number of his other incarnations, fantastic leadership qualities. Much like his ninth and tenth incarnations, he also has a large amount of knowledge of Earth slang and colloquialism as he is aware of Facebook, Twitter and Bebo. He appears to have remembered a few of his predecessor's catchphrases, such as "Fantastic!", "There's been some cowboys in here", and repetition of the word "What!". He is extremely resourceful and quick thinking, able to spin things to his point of view, and can find positive outlooks in negative situations. He is somewhat more melodramatic in his brilliance, going so far as to prove Fermat's last theorem, faster-than-light travel and why electrons have mass just to prove he could be trusted. (DW:The Eleventh Hour). He also can tell how old something is by taste which was a trademark of the Fifth and Tenth Doctors. He is often late, arriving twelve years later than he intended, like his fifth, ninth and tenth incarnations. He also appears to have incredibly good eyesight as well as an eidetic memory, and is able to scan an entire scene and pick up little details. He implores others to observe every detail in an area and make brilliant deductions from doing so. Much like the Second Doctor, this Doctor shows a childlike recklessness but always has a grander scheme behind his actions. Also similar to his second incarnation, the Eleventh has a knack for acting smug, occasionally boasting about his feats, knowledge, and reputation. This Doctor also has a more serious side to his character. He shows little tolerance for dire mistakes and being belittled by others; he likely does not give second chances. He even threatened to leave Amy back at her home after one mistake. (DW: The Beast Below) The Eleventh is also aware of the flaws humans have and reminds them of those flaws, a trait his ninth incarnation had. The solemn nature of this Doctor when not being taken seriously and the belittling of humans is similar (but milder) to the traits of the Sixth Doctor. Also reminiscent of the Sixth Doctor, this Doctor seems to be less interested in his companions than his previous incarnation was, even ignoring them when busy with his work. Unlike his previous incarnation, this Doctor seems slightly annoyed with River Song instead of enjoying her company. Much like his fourth, sixth, and ninth incarnation, this Doctor was much more outwardly alien and wasn't as in touch with humanity as his fifth, eighth and previous incarnation were. The Eleventh believes that a human's ability to feel pain and suffering defines their humanity. (DW: Victory of the Daleks) This Doctor is more prone to violent actions and sometimes uses them as his first option to achieve his goals: he repeatedly attacked a Dalek with a spanner in order to provoke it into showing its true nature and immediately struck Dr. Bracewell in order to incapacitate his detonation. (DW: Victory of the Daleks) The Eleventh Doctor appears to be less skilled with his sonic screwdriver than his predecessors were, or perhaps he is merely unfamiliar with his newly acquired upgraded version. Thus far he has only attempted to use it when it wasn't actually necessary at all and he appears at times to be mildly confused when utilizing it. In addition, he has repeatedly landed the TARDIS weeks and even years off course. The Eleventh Doctor has also shown a tendency to refer to Amy by her surname, much as his first incarnation did with companion Ian Chesterton. Also similar to his first incarnation, this Doctor wasn't keen on hiding his emotions, usually making his anger obvious through violent actions and tone of speech.