from Hacker News

ctrager

joined 7/5/09, 12:13 PM has 608 karma

• Why copper-bearing rocks here, but not there?

  by ctrager on 11/25/21, 7:41 PM, with 3 comments

• Show HN: Are you playing your violin (viola, guitar, etc.) in tune?

  by ctrager on 1/26/21, 5:25 PM, with 76 comments