The parent post seems to assume that a "heroic sprint of productivity" would not include communication and documentation, i.e. that productivity only means codi

The parent post seems to assume that a "heroic sprint of productivity" would not include communication and documentation, i.e. that productivity only means coding. I don't see that assumption reflected in the grandparent post, and moreover if you don't consider communication productive in its own right, you're going to have much bigger problems than people taking a day off.