This is an accurate observation on the IIT students. A student in an IIT is an demonstration for their will power to sacrifice their social life in their teens to know all the common problems(past years exam questions) by repeated practice. The one thing that makes harder to work with IIT students is they feel entitled forever and feels they belong to a higher caste. That is why its always best to form teams with only IIT graduates. Also another important thing to note is IIT as an under graduate is much tougher to get in to rather than as an IIT post graduate.