Story point estimates need to include all known activities required to complete the story, including testing and refactoring, complexity level, risk level, etc. Instead of factoring a certain fudge factor, including all activities proves
to be more accurate. The other answers are incorrect because vacations and sick days shouldn’t be considered in an estimate, only known activities should be considered; meeting times are not included in story estimates; server backup
times are also not included as part of the story point estimating.