One of the most controversial updates to the 2011 Scrum Guide has been the removal of the term “commit” in favor of “forecast” in regards to the work selected for a Sprint. We used to say that the Development Team commits to which Product Backlog Items it will deliver by the end of the Sprint. Scrum now encourages the Development Team to forecast which Product Backlog Items it will deliver by the end of the Sprint.| Scrum.org
Technical Debt is a metaphor for the consequences of cruft. You either have to accept a drag on further features (paying interest) or fix the software (paying the principal)| martinfowler.com