It's a mourning band. They're worn to acknowledge the loss of someone important to the wearer. Hacker News puts the bar up when figures important to the communi

It's a mourning band. They're worn to acknowledge the loss of someone important to the wearer. Hacker News puts the bar up when figures important to the community die. In this case, it acknowledges the loss of Bob Taylor: https://www.nytimes.com/2017/04/14/technology/robert-taylor-innovator-who-shaped-modern-computing-dies-at-85.html?_r=0 https://www.nytimes.com/2017/04/14/technology/robert-taylor-...