>>16683787
If we are the first then there's a glaring unexplained question of how/why we would be the first.
The universe didn't just recently become habitable, there shouldn't have been anything stopping the development of complex life billions of years earlier in other solar systems that formed before ours.
Even right here on Earth, an intelligent technological civilization could have arisen hundreds of millions of years before ours did, if evolution had gone a little differently and, say, something else besides a primate developed long arms and opposable thumbs or an equivalent