An engineer, physicist and mathematician are in an interview (with no accountants) ... An engineer, a physicist and a mathematician are in an interview. The engineer is asked, 'What is 2+2?'. The engineer instantly pulls out his calculator, but since its floating point processor firmware has a bug, 2+2 gives him 3.999 which he tells the panel. The physicist is asked the same question, and he replies 'Well, using a back of the envelope calculation, 2 is order of magnitude 1. Adding two numbers of magnitude 1, will result in a number less than order of magnitude 2. Therefore 2 + 2 is less than 100'. They finally pose the problem to the mathematician, and he pulls out this notebook and starts scribbling. 30 minutes later, he looks up the panel and triumphantly declares, 'It converges!!!'