Before the post was deleted and I was issued a ban warning, there was a healthy debate occuring primarily around the Fermi Paradox:

https://en.m.wikipedia.org/wiki/Fermi_paradox

If you search that you can get a youtube of it also, animated;

http://youtu.be/sNhhvQGsMEc

The main point is:

• the 'EM drive' is a simplistic device.
• we have not destroyed ourselves.
• it changes all the numbers re distance.

Also there is a LOT of uncomfortable, 'science drones' that have been left behind the curb by the EM drive 'Pass', trust me it got a pass for a reason ha ha.

I got a Ban threat from 'ask science' for opening 'debate' about how the EM Drive makes a joke out of the 'we are alone' paradoxes.