Working Software. Done Increments. Two related concepts in the agile world that people trying to leverage Agile/Scrum’s empiricism outside of the software/technology space struggle with.
The intent behind these practices is to achieve transparency to validate/invalidate assumptions and manage based on evidence.
The assumptions can be in areas such as desirability, viability, feasibility, or sustainability.
Different industries face different challenges in implementing working increments, but the key is to balance the need for transparency, risk mitigation, and feedback.