====== 팀의 사기를 측정하는 법 ======
  * [[https://spoqa.github.io/2018/09/11/happyhour.html|사기 높은 팀을 만드는 해피아워]]
  * [[https://medium.com/the-liberators/agile-teams-dont-use-happiness-metrics-measure-team-morale-3050b339d8af|Agile Teams: Don’t use happiness metrics, measure Team Morale]]