If aliens were here, they'd be integrating themselves through popular media. Curving the culture of human centric interactions, towards multidimensional communities. If they wanted to communicate, they're doing it already...,(reply>), Incorrect,(reply>), No, because the formula doesn't take into account the difficulty of communication and travel. Any alien that lives further than 100 light years would almost certainly not know that we are here, and that probability decreases as you go further. Within that 100 light year sphere, there's only about 15000 other stars, and it's unlikely that any of them have intelligent life.,(reply>), I believe they have been and are still here. So do many people in power.  The evidence just from last 10 yrs is mounting.  Let alone since Pre Roswell, which there are "crashes n sightings " before Roswell in modern times. People that don't know or believe are just ignorant.  They don't look at the data...