Work expands so as to fill the time available for its completion

Gist

Work is like a gas. A gas expands to fit the volume of its container. If there is no container, it keeps expanding.

In the same manner, work expands indefinitely.

Takeaway

There will never be enough time to complete any work. It can go on indefinitely.

Therefore, in order to have time for other things outside of work, it has to be time-boxed,

Time-boxing

1. Limit the time to do a task
2. Limit the scope
3. Or Both