services can be self-sustaining because the need is always there.

but a business that makes and sells durable goods faces a problem: as soon as everyone who wants the product has it, then there is no need for more. sales will cease. the company will go out of business.

Don Norman

models of impact

 

потребности—ценнсти—дизайн—сервис

потребности—ценнсти—дизайн—сервис