5 ms·[video] (2011)by AlphaWeaver 10y ago[video] (2011)jonknee 10y agoBecause ski lift installation has changed since 2011?grzm 10y agoIt's common on HN to include the year if it's not from the current year. It's not a reflection on the submission's appropriateness: it's just additional information many find useful, just as the [video] tag is.