User talk:Trigger us

Hello, I'm David Eppstein. I wanted to let you know that one or more of your recent contributions to Buoyancy have been undone because it did not appear constructive. If you would like to experiment, please use the sandbox. If you think a mistake was made, or if you have any questions, you can leave me a message on my talk page. Thanks. —David Eppstein (talk) 05:37, 21 July 2016 (UTC)