You ain't gonna need it.
Yesterday we were doing a DB design in our project which is just in its first sprint. I was paired with my team mate for this task and we were just going into discussions shaping our DB structure. Normalizing it and so on.
At one point I suggested a point from the perspective of extensibility in future. My team mate who is also our SCRUM master suddenly said YAGNI. And he started laughing. I was wondering what was that. Which language? Latin? Greek?
He quickly googled for the word YAGNI and the all the results said - "You ain't gonna need it". Instantly I recollected the SCRUM phillisophy of NO Big Design Upfront - NBDU. Just be in present do not worry a lot about future.
We laughed for while and continued back to work.