[2:31-33] God's answer to the angels

"and He (God) taught Adam (the first human) 
Nouns (the properties/attributes of things),
all of it (language)
then he (Adam) explained them (the meaning of things) to the angels

so He (God) said (to the angels):
    'give me news of these (things') nouns (that they had just been explained by Adam)
    if you are truthful"

"they (the angels) said:
    glory be to You (God)
    no knowledge to us
    except what You taught us
    Truly You are the Knower the Wise"

"He (God) said
    'O Adam, give them (angels) news of their (things) nouns (/names)'
so when he gave news of their nouns, He (God) said:
    'didn't I say to you (angels)
         indeed I know unseen of the skies and the earth
         and I know what you (angels) make apparent
         and what you were concealing"
[2:31-33]

This verse is a continuation of the heavenly conversation being held between the angels and God about the creation of humans.  God reveals to the angels His wisdom behind creating human beings that are capable of acts of both good and evil (corruption, bloodshed, etc) and ultimately what humans have that angels do not!

Language (and Intelligence)

• God taught Adam (the first human) Nouns (literally; "the names" or "Names").  This not only indicates that Adam knew what things were called, but that he was given the ability to refer to objects via words and symbols (as opposed to simply showing the objects themselves like animals, or young babies - a unique ability). 
• All of "it" (a feminine singular) possibly referring to "language" - i.e. the ability to manipulate nouns via verbs, adjectives, adverbs, etc (symbolic reasoning).  It is believed that language is intrinsically linked to intelligence. And hence, the ability to manipulate symbols implies Adam had intelligence.  
• This also indicates there was an "Adamic language" which all subsequent languages are ultimately derived from - this would explain why all languages have a common structure and it is a well accepted theory that all languages today stem from one common, ancestral language.

Teaching (and Intelligence)

• Adam explained (literally "demonstrated") the meaning of objects by talking about them to the angels ( An ability to talk on his own and convey meanings! this is something artificial intelligence cannot fully do yet - though there are some which pass the turing test, they are far from true semantic manipulation - like we humans are able to do).

Unsupervised Learning (and Intelligence)

• After Adam had explained their meanings to the angels, God tells the angels to explain what they had been explained by Adam. However, they respond that they cannot learn anything other than what God had taught them directly.  It is analogous to a computer which is programmed or trained beforehand with knowledge (supervised learning) vs a computer which can learn new knowledge in real-time (unsupervised learning).   Thus God highlights to us the gift that humans have yet angels lack (since humans are able to learn new knowledge, unsupervised, in the world we live in, during real time)
• Whereas Angels merely repeat what they have been told to do.  They retain information but do not manipulate it.  They are simply stone floors that hold puddles of water.   Human beings, however, are soil that can absorb the water and grow green sprouts or weeds.  they can manipulate the information given and form links to create NEW information.  This is the basis of unsupervised learning.   These links can be lateral and random (as with purely creative thoughts or mixed up dreams) or they could be logical (as with mathematics, science and language, etc - inference, deduction, abstraction, etc).  To deny our innate ability to create "links" between information would be to deny a God-given gift to humanity.  We are not angels that merely transmit information - we are humans that can grow new information - which explains humanities innate tendancy to diverge on every issue, whereas angels would be united and unopinionated. Unfortunately, this "gift" also carries the risk of growing weeds among the plants (false information or conclusions - but then again, it can be argued that we learn more from mistakes than anything else)

After God reveals to the angels part of His wisdom for the creation of humanity, He reminds them that He knows everything (even the unseen things - forces, microorganisms, atoms, spirits, etc), including what is made apparent or concealed by people or angels (e.g. inner thoughts, intentions, desires, etc)

So to summarise:
humanities innate tendencies to kill and cause corruption in the earth are side effects of our God given ability to teach, learn and talk (hallmarks of true intelligence).
The double-edged sword of Intelligence