All orchid species that are pollinated solely by insects have features that attract insects. The flower of a recently discovered orchid species contains edible tendrils that invariably attract insects to the inside of the flower. Hence, it follows that this orchid species is one that is pollinated solely by insects. The argument is flawed because it ['assumes without warrant that a characteristic that distinguishes one class of things from another is the only characteristic that distinguishes that class from the other', 'mistakes a characteristic that is unique to one particular class of things for a characteristic that is unique to an unrelated class of things', 'treats a characteristic known to be true of one class of things as if that characteristic were unique to that class', 'makes broad generalizations about all members of a particular class of things on the basis of what is known about a member of an unrelated class of things']