Creative work needs long unbroken blocks, so a single meeting can cost a whole day rather than an hour.
Graham's 2009 essay. A manager's day is divided into slots and a meeting costs one slot; a maker's day is one block and a meeting placed in the middle costs both halves.
In practice
- An engineer with a meeting at 2pm loses the morning to shallow work and the afternoon to recovery.
- A researcher whose day contains one 11am call has one day divided into two unusable halves.