[Dylan16807]

Waiting for noise to stop is less reliable because of how brains work, and also has a much smaller range. The microwave ding is useful.

[eviks]

Brains work just fine and your typical kitchen/apartment range is small enough, but in general - the trade-off between comfort and reliability is not something you can resolve for others

[Dylan16807]

When the goal is "notice a background noise going away while you're involved in a different task" brains do not do just fine.