Usability in the Physical World vs. on the Web

Summary: In the real world, you can get away with causing customers a small amount of difficulty, but on a website, visitors will leave at the smallest obstacle.

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Jakob Nielsen, Ph.D., is a retired principal and co-founder (with Dr. Donald A. Norman) of the Nielsen Norman Group. Jakob established the "discount usability engineering" movement for fast and cheap improvements of user interfaces and invented the heuristic evaluation method.

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