... those who go hunting for genetic mutations. I found a four-leaved clover yesterday; I had rather hoped to find one, and was idly running my eye
over the clumps at the margins of a wheatfield, when there it was, the one
in ten thousand with an extra leaf. Apparently, examples have been found with up to 21 leaves, which rather casts my find into the shade; also, I now discover, it's five-leaved clovers that
are considered lucky these days.
And you're not supposed to try to find them, either; only stumble across them. I feel lucky, nonetheless.