The limits of evidence-based marketing. That's what most of us do.
We present facts and proof and expect a rational consumer/voter/follower/peer to make an intelligent decision on what's better. That's how science works. Thesis, test, evidence, conclusion. Psychology study points to giving arrows the finger. A sign featuring a pointing finger Images of pointing fingers are much better at diverting people's attention than directional arrows, new psychology research suggests.
In a paper published in the peer-reviewed journal Perception, researchers at the universities of Exeter and Lincoln showed that biological cues like an outstretched index finger or a pair of eyes looking to one side affect people's attention even when they are irrelevant to the task at hand. Abstract directional symbols like pointed arrows or the written words "left" and "right" do not have the same effect. 214758usb-a-A-Snapshot-of-Priorities-and-Perspectives.pdf (application/pdf Object) The Library Marketing Toolkit.