> While it would be unscientific to simply say that aliens exist, it's plenty scientific to consider the rate of star formation and age, conditions for life aro

> While it would be unscientific to simply say that aliens exist, it's plenty scientific to consider the rate of star formation and age, conditions for life around stars, and time it takes to develop intelligent life to say that there is a particular likelihood of there being alien life. Like I said in another comment below - you're assuming information is distributed uniformly across the universe, which we don't really know and can't assume because it certainly isn't in the solar system.