Wtf Makes Something "cool" Or Someone "popular"

[SelfPeace]

This always puzzled me. 

https://medium.com/the-mission/what-the-is-the-mainstream-fbdc4178547c

^ he provides some interesting insight on what the "mainstream" is and why it's cool. Mainstream = PRESENT MOMENT of information, or culture.

[Leo Gura]

I thought cool was a being cooler than the mainstream?

Mainstream is like luke-warm