@Richard_Littler Why the f*ck is the Saturn V in that illustration?

@Richard_Littler The PBS show Nova here in the USA did some great shows about how it was possible for all of this stuff to be done by so-called "primitives" - when you've got a motivated populace that intrinsically understands their environment and landscape, anything is possible, given enough time.

@Richard_Littler I remember bringing this book to my freshman high school honors biology class. My teacher rapped me gently on the head with a 1m ruler and said "You know that's all bullshit, right?" (It was a Catholic school, so the ruler was expected.)