Student or Learner
Hi, please help
"some celestial mail-order catalogue"
in "Writing about human evolution, Elaine Morgan has pointed out how we are inclined to imagine that all the modifications and adaptations that might be nice to have for survival could simply be ordered from some celestial mail-order catalogue. But, of course, this is mere fantasy and sloppy thinking, and it is important not to fall into this trap."
Celestial means heavenly, i.e. God, and mail-order catalogue means a series of easy selections (by God) from a list of available things.