Nobody really knows. There seems to be a fine line between genius and madness. Dr. Kay Jameson has a good book called Touched By Fire, which talks about that exact topic. Many very creative people suffer from depression or Bipolar disorder.
Yes, people with Downs Syndrome can get depressed.
People who use computers are not necessarily intelligent. Scientists have trained gorillas to use computers. However, many people who work with computers are intelligent. This is explained by the fact that most technicians in any given field of study are intelligent, at least in their field. Because their brain is sort of mathematical and because of this they can easily understand the world of computers. moreover, the frontal portion of brain of such individuals is really active.
Not necessarily. Riches may make them depressed I guess, but there are a lot of people who don't have much either, so they are depressed.
It can make overweight people depressed, since some people tend to make fun of other overweight people. This doesn't mean every overweight person is depressed.
The claim that the ancient Romans were not artistic is not easily defensible, if it is defensible at all. For, in respect to architecture, a number of visual arts (such as sculpture), and literature (poetry and prose alike), among other areas, the Romans were quite distinctively and admirably artistic by comparison with other ancient (and later) peoples and cultures.
they are very intelligent and can recognize people
a group or team of intelligent people are called wath
It's spelled "Aspergers" and yes, they do get depressed.
Most people are depressed on the inside, you will probably never know the exact number.
Being intelligent of course
People try to pretend to be depressed to get attention. My friend tricked herself into depression by pretending to be depressed for so long. The problem is, that when someone actually has depression and they admit it, people won't believe them.
It really depends on the length of time you feel depressed and the the strength of the depression. Some people "feel" depressed or sad and some people "are" depressed.