“we should remember that if you design something in a certain way, people can perceive something which doesn’t exist in reality.Trecho retirado de "Alchemy: Or, the Art and Science of Conceiving Effective Ideas That Logical People Will Hate" de Rory Sutherland.
What really is and what we perceive can be very different.
This is where physical laws diverges from psychological ones. And it is this very divergence which makes Alchemy possible.
In the same way, you cannot describe someone’s behaviour based on what you see, or what you think they see, because what determines their behaviour is what they think they are seeing. This distinction applies to almost anything: what determines the behaviour of physical objects is the thing itself, but what determines the behaviour of living creatures is their perception of the thing itself.
If you are a scientist, your job is to reach beyond the quirks of human perception and create universally applicable laws that describe objective reality. Science has developed sensors and units of measurement, which measure distance, time, temperature, colour, gravity and so on. In the physical sciences we quite rightly prefer these to warped perceptual mechanisms: it does not matter whether a bridge looks strong – we need to know that it really is strong.
A problem arises when human sciences – politics, economics or medicine, say – believe this universalism to be the hallmark of a science and “pursue the same approach; in the human sciences, just as in TV design, what people perceive is sometimes more important than what is objectively true.
In physics and engineering, objective models usually make problems easier to solve, while in economics and politics objectivity might make things harder. Some pressing economic and political issues could be solved easily and cheaply if we abandoned dogmatic universal models; just as TV designers don’t wrestle with the problem of producing the entire spectrum of visible light, policy-makers, designers and businessmen would be wise to spend less time trying to improve objective reality and more time studying human perception and moral instinct.
Economic logic is an attempt to create a psychology-free model of human behaviour based on presumptions of rationality, but it can be a very costly mistake. Not only can a rational approach to pricing be very destructive of perceived savings, but it also assumes that everyone reacts to savings the same way. They don’t, and context and framing matter.”