These are very good questions. In a series of studies on the introduction of new technologies, MIT researchers discovered a windows-of-opportunity effect. They found that managers have only a discrete time period in which to effect real behavioral and organizational changes after introducing a new technology. After that period, use of the technology tended to “congeal,” freezing unresolved problems at least until the next crisis. Whatever changes did not get made during that window were put off for much later, usually not until the consequences of those latent problems accumulated to provoke a crisis. Likewise, windows of opportunity open and close back up again in career change.