The idea of the 'great filter' isn't that a necessary item's absence prevents advancement -- the idea is that through technological advancement, something happe

The idea of the 'great filter' isn't that a necessary item's absence prevents advancement -- the idea is that through technological advancement, something happens to destroy most civilizations along the way. but stated it as you have, there's a huge number of filters and requirements, and they are all over the place, and that's definitely true.