Products were once designed for the functions they performed. But when all companies can make products that perform their functions equally well, the distinctive advantage goes to those who provide pleasure and enjoyment while maintaining the power. If functions are equated with cognition, pleasure is equated with emotion; today we want products that appeal to both cognition and emotion.
Donald A. NormanDesign is really an act of communication, which means having a deep understanding of the person with whom the designer is communicating.
Donald A. Norman