1.When conditions within an office or classroom, such as an important yet difficult project, force all the authoritative powers to people of nerdy stature.
2. When all power is derived to, for whatever reason, the smartest or nerdiest people in the group.
Mr. Philmoore made us do a 20 minute presentation on Babylonian kings. Rob and Kim were the only ones that knew what to do, so it became a total nerdarchy.