Sentient, technological beings exist only on earth

I would now like to provide some refutations. What I do contend is that there has been more than sufficient time for someone else (carbon based or not) to do so, many times over on many different planets. Why haven’t they? There are millions of possibilities why. First of all, humans have only existed for roughly 3000 years (we are in the 21st Century). We could’ve been possible for 5 billion years, yet evolution has created us to only be here for 3000, barely a fraction of 1 billion. Now, my opponent expects that other races out there will have spontaneously evolved into technological and sentient beings and have been around for say 4 billion years. Using humans as a model (which is what my opponent has done) we can see that this is clearly impossible. Furthermore, let us assume that a race similar to humans exists out there. Why haven’t they alerted their galaxy? Well, they’ve only been around for 3000 years maximum, and maybe they don’t want to! Not everybody desires to play God. Cost is not a valid argument. A %100, 000 colour TV camera of 1965 is $100 today My opponent is trying to draw parallels between space exploration and something as small as a TV. One of the major reasons NASA was shut down was because of the ridiculous cost of sending a man into space. Travel time too, is inconsequential. Feasible plans for interstellar travel are already in existence. A solar sail capable at achieving a respectable percentage of lights speed is actually possible today. My opponent failed to provide a source for this information and has also lied to you. A solar sail can barely achieve 1/10000 of light speed after giving it 5 years of travel. [1] He also coincidently forget to mention that solar sails are just that, sails and are not capable of taking a human along for the ride. He ALSO forgot to tell you that solar sails were created and tested by NASA, which has been shut down, thus solar sails are no longer being tested and are no longer becoming more technologically advanced. Thus, time is an important factor as we can barely achieve 1/10000 of light speed. A “feasible” plan of interstellar travel isn’t near existence. At all. We could travel to the nearest star in a decade. As per source 1, we can travel to Pluto in 5 years. The closest star is Proxima Centauri which is 39, 900, 000, 000, 000 km away. [2] Travelling at speeds of 150, 000 km/ph we can reach Proxima Centauri in a mere 30 365 years. This lofty goal of a “decade” will be forever beyond our grasp. Jumping like this we could occupy the galaxy in less than a million years. We can’t jump like this as I have already shown. There is absolutely no chance we can populate this galaxy in a million years. As I have shown, the way we are destroying our planet has led to irrevocable damage and scientists have estimated our demise in the next century (which has gone unrefuted). why have your millions of alien species been unable to accomplish this? This is ridiculous. I have never said that there will be millions in our galaxy, there will probably only be one per galaxy at the max. My opponent is trying to make organisms spontaneously evolve in the span of a year. I have already refuted this, pointed it out in R2 and it has continued to go unrefuted. Nothing I have surmised is beyond physical law. Yes, it is. As I have pointed out, if another aliens species was tampering with their galaxy what we would see now occurred 25, 000 years ago. So we would have no credible evidence of their tampering, does that mean they don’t exist? ? I can’t see the laws of probability, but do the laws exist? ? Of course they do! our existence is astronomically unlikely to be repeated elsewhere or elsewhen. Why? The universe is constantly expanding, there are trillions of planets and stars just like ours and as I have shown in R2 in our own galaxy there are potentially habitable planets. There are millions of galaxies just like ours, there just needs to be a single organism to have life. Heck, there might even be life on Mars as pointed out in R2! My opponent has provided no sources, little to no refutation, and continues to make baseless assumptions and ridiculous claims. I have refuted my opponent’s arguments, used sources and evidence to back it up, and have refuted my opponent’s rebuttal to my own points. It is clear that alien species exist elsewhere and it is a clear VOTE CON. SOURCES: . http://www.space.com... . http://heasarc.nasa.gov...