Smart people all over the world are known to have certain habits that set them apart from the rest of the lot. be it their bad habits or basically their good ones. These are what makes them and keeps them being the smart ones.
For any genius man, the IQ level should be anything between 140 and 159 while for a man of average intelligence it stands somewhere between 100 and 115.
There have been many weird occurrences related to these genius or extraordinarily genius men as well. For example, albert Einstein did not even utter a word till he turned 4 while it is a well known facts that the first business that Bill Gates started, failed miserably.