Darwin's and Wallace's claims to have made duel "independent discoveries" of Matthew's prior published hypothesis - whilst surrounded by friends and associates who read it and cited it in the lietarature is analogous to St Mary's immacualte conception of the baby Jesus whilst surrounded by fertile men. Read the argument here.
Arboriculture
Disology: Science of Discovery
Analogies are excellent devices for explaiining difficult and unwelcome discoveries in science, and history