Resumen
The article studies the impact of speech interfaces from a psychological viewpoint, and outlines limits of what computers say and how they might say it. The best approach for creating systems that comprehend or produce speech is to model human physiology and cognition. Human-directed responses to voice systems is similar to what normally applies to other humans. This demands an alliance of speech interfaces with the evolutionary psychology of human speech. The article discusses certain evolutionary principles which have to be accounted for while successfully designing a voice interface, entailing issues like recognition rates, extent of in-grammar utterances, and prosody versus clarity. When people are asked what distinguishes humans from computers, "emotion" leads the list. Social errors by the computer, regardless of the mode of output, are much more consequential for speech input compared to other forms of input. Negative comments and behaviors are processed more deeply and lead to greater arousal than positive comments