Or in other words, no such “modern spacecraft” fitting your earlier description exists outside of designs which may or may not work as intended or ever fly. Whe

Or in other words, no such “modern spacecraft” fitting your earlier description exists outside of designs which may or may not work as intended or ever fly. When such designs are actually built, tested and proven feel free to make sweeping statements about what constitutes the reality of what’s required to fly around the moon. Until then the entire existing history of spacecraft is probably more reliable and informative as to astronaut requirements than paper fantasies.