I was having a conversation the other day and the person I was talking to was convinced life on other planets doesn't exist otherwise we would know for sure by now. I don't agree. There are hundreds of thousands of planets and we can't be the only ones surely! It pissed the other person off when I said it! Do most people think this way, or am I one in a few?

There's a simple answer to why super-intelligent life hasn't contacted us, or why we haven't contacted it. Intelligence brings about its own destruction. It won't be long for us now, and we're nowhere near being able to send a manned craft to another star. Life destroys itself before it's clever enough to spot other life.