"X isn't possible" statements have always held a special interest for me. To me it is that person stating that they, or possibly they think we, know everything

"X isn't possible" statements have always held a special interest for me. To me it is that person stating that they, or possibly they think we, know everything there is to know about whatever the subject is they are describing. Many of the scientific advances from the past 100 years that we take for granted today were "impossible" 200 years ago. As for the "enough problems here on Earth" statements, I always say that most likely the solutions to many of those problems will be solved directly, or indirectly, by visionaries chasing the dream of traveling to the stars. More than likely anyone who says they don't want to spend money on space exploration because of "problems" here is just saying they want to spend the money on their own preferred project, whether there's a benefit or not.