User talk:24.151.7.239

Welcome to Wikipedia. Although everyone is welcome to make constructive contributions to Wikipedia, at least one of your recent edits did not appear to be constructive and has been reverted or removed. Please use the sandbox for any test edits you would like to make, and take a look at the welcome page to learn more about contributing to this encyclopedia. 21:17, 14 February 2008 (UTC)

March 2018
Hello, I'm Qzd. I wanted to let you know that I reverted one of your recent contributions —specifically this edit to Opening Skinner's Box— because it did not appear constructive. If you would like to experiment, please use the sandbox. If you think I made a mistake, or if you have any questions, you can leave me a message on my talk page. Thanks. Qzd (talk) 02:57, 4 March 2018 (UTC)