Everything from sensor readings and financial transactions to photographs and Twitter messages are considered to be .

You want to paint your room yellow, so you get some samples at the paint store. when you hold the sample against your white wall, it looks different from the way it looks against the green curtain. a psychologist would attribute this to perceptual constancy. visual paradoxes. contrast effects. threshold differences.

Leticia has worked for 20 years in the public relations department of a large firm and has been the vice-president for the past ten years. it is unlikely she will ever be promoted to the top executive position in her firm even though she has directed several successful projects and is quite capable. her lack of promotion is an illustration of (a) the "glass ceiling" (b) the "glass elevator" (c) the "mommy track" (d) sexual harassment

Your subscription to investing wisely weekly is about to expire. you plan to subscribe to the magazine for the rest of your life, and you can renew it by paying $85 annually, beginning immediately, or you can get a lifetime subscription for $620, also payable immediately. assuming that you can earn 6.0% on your funds and that the annual renewal rate will remain constant, how many years must you live to make the lifetime subscription the better buy?