Simply put, a calendar should reflect how people use time to manage their lives. In general, we can divide our time concerns into two types: deadlines and ongoing processes. A deadline is an instant in time when something is due, such as a project milestone. An example of an ongoing process is an overnight business trip. While I'm visiting Chicago for two days, for example, I'll have three meetings with various clients. Every contemporary calendar program ignores deadlines and ongoing processes, but instead is based on the establishment of appointments. An appointment is a discrete meeting that begins at a certain time. Appointments are an important component of time management, but they are by no means the only one.
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Tracking the start time of meetings is far more important than tracking the end times, yet calendar programs don't differentiate between the two. In the last 30 years, I've initiated and attended thousands of meetings. The starting time of these meetings is extremely important. For most of the meetings, however, the end time is not important, not needed, not specified, and not knowable in advance.
— 📖 The Inmates Are Running the Asylum
- follows this up with: ~ humans prefer systems that can fudged a little