Would you like to inspect the original subtitles? These are the user uploaded subtitles that are being translated: 1 1 00:00:00,913 --> 00:00:02,349 Here's some data that backs up 2 2 00:00:02,349 --> 00:00:06,602 the importance of the requirements gathering phase. 3 3 00:00:06,602 --> 00:00:08,155 From the Standish Group Report, 4 4 00:00:08,155 --> 00:00:10,976 the first comprehensive study of project performance, 5 5 00:00:10,976 --> 00:00:14,151 the number one cause of project failure was starting 6 6 00:00:14,151 --> 00:00:17,544 with an incomplete set of requirements, 7 7 00:00:17,544 --> 00:00:21,094 and the number six cause was changing requirements. 8 8 00:00:21,094 --> 00:00:22,505 Most likely because they were not 9 9 00:00:22,505 --> 00:00:24,922 well baselined to start with. 10 10 00:00:26,251 --> 00:00:29,587 From the excellent KPMG Canada 1997 Survey, 11 11 00:00:29,587 --> 00:00:31,655 much the same lessons learned. 12 12 00:00:31,655 --> 00:00:33,854 The main cause of project failure 13 13 00:00:33,854 --> 00:00:37,021 was unclear and changing requirements. 14 14 00:00:38,162 --> 00:00:40,115 Dean Liffingwell, in a famous paper 15 15 00:00:40,115 --> 00:00:41,633 on requirements management, found 16 16 00:00:41,633 --> 00:00:46,633 that requirements errors account for 70% to 85% of rework. 17 17 00:00:48,505 --> 00:00:51,455 And Robert Grady, in another well known paper, found 18 18 00:00:51,455 --> 00:00:56,455 that poor requirements account for 71% of project failures. 19 19 00:00:58,330 --> 00:01:00,370 Here's a couple of true stories I've encountered 20 20 00:01:00,370 --> 00:01:03,833 with problems with elevators in hospitals. 21 21 00:01:03,833 --> 00:01:05,609 A hospital builds a new wing. 22 22 00:01:05,609 --> 00:01:08,500 On opening, it is discovered that the elevator doors 23 23 00:01:08,500 --> 00:01:10,625 are not wide enough to admit stretchers 24 24 00:01:10,625 --> 00:01:14,836 without having to lower the safety rails. 25 25 00:01:14,836 --> 00:01:17,348 Not that far away a few years later, 26 26 00:01:17,348 --> 00:01:19,974 a different hospital builds a new wing. 27 27 00:01:19,974 --> 00:01:22,942 On opening, it is discovered the elevators are too short, 28 28 00:01:22,942 --> 00:01:26,384 and they cannot fit in a stretcher at all. 29 29 00:01:26,384 --> 00:01:29,642 To this day when they have to move someone upstairs, 30 30 00:01:29,642 --> 00:01:31,910 they wheel them over to the old part of the hospital, 31 31 00:01:31,910 --> 00:01:33,351 take them up the old elevator, 32 32 00:01:33,351 --> 00:01:37,391 and then wheel them back across to the new wing. 33 33 00:01:37,391 --> 00:01:40,277 If only someone had written down a requirement 34 34 00:01:40,277 --> 00:01:41,831 that all elevators shall be able 35 35 00:01:41,831 --> 00:01:43,117 to accommodate standard size 36 36 00:01:43,117 --> 00:01:46,534 hospital equipment, including stretchers. 37 37 00:01:48,436 --> 00:01:50,474 Simply writing down what is needed to meet 38 38 00:01:50,474 --> 00:01:52,953 the objective, before you conduct the rest 39 39 00:01:52,953 --> 00:01:57,036 of planning, is really, really, really important. 3469