Of course we are not alone! Just look up at the night sky – there are thousands of stars you can see with a naked eye. There are billions that you can see with some telescopes and space travel. How many of these have planetary systems – we don’t even know well enough yet (we’ve found 133 with more than one planet, but our tools still suck). Among all of that, what are the chances that Earth is the only one that has arguably intelligent life? I am no mathematician (or statistician), but I won’t be betting any money on us being alone.