Following the editorial line of our colleague Silvia SM, we can also assume a superlative facility to adhere to fascism or to catch fasciolosis or suffer from fasciitis or . . . Actually, it's a very easy mistake.
Superlative of easy. It means it's too easy. It does not require any effort to be performed or executed. In Colombia we say "de papayita". Doable, understandable, simple.
A significant fact that is fascinating as well as tremendously easy.