When something looks like it cannot be done, it generally cannot be done. But it’s not because it’s impossible. Rather, it’s because it will probably not even be attempted.
Had this been the case all the time, we’d probably still be living in caves and hunting with spears. But, because of our drive for new knowledge, key members of our species broke their comfort zone to invent the future. Think aeroplanes, smartphones, cloud computing, 3D printing, etc. All these seemed impossible before those select few innovators made them a reality.