[Haskell-cafe] What to call Occult Effects

[Kim-Ee Yeoh]

By an occult effect I mean that under the type signature (M a -> M b -> M
b) of a particular monad M, the two expressions (const id) and (liftM2 $
const id) are equivalent.

Occult here refers to how the effect of the second parameter blocks the
effect of the first one.

In your opinion, is there a better word than occult to describe the
property of such monads?
-- 
-- Kim-Ee
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