Signal-to-Noise Ratio
The signal-to-noise ratio (SNR) is a principle borrowed from more technical fields such as radio communications and electronic communication in general. The principle itself, however, applies to design and communication problems in virtually any field. For our purposes, the SNR is the ratio of relevant to irrelevant elements and information in a slide or other display. The goal is to have the highest signal-to-noise ratio possible in your slides. People have a hard time coping with too much information. There is simply a limit to a person’s ability to process new information efficiently and effectively. Aiming for a higher SNR attempts to make things easier for people. Understanding can be hard enough without bombarding ...
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