User talk:123.208.40.90

September 2020
Hello, I'm Materialscientist. I wanted to let you know that I reverted one of your recent contributions —specifically this edit to James Prescott Joule—because it did not appear constructive. If you would like to experiment, please use the sandbox. If you have any questions, you can ask for assistance at the Help desk. Thanks. Materialscientist (talk) 09:22, 16 September 2020 (UTC)
 * If this is a shared IP address, and you did not make the edits referred to above, consider creating an account for yourself or logging in with an existing account so that you can avoid further irrelevant notices.

January 2021
Hello, I'm Steve M. I noticed that in this edit to Four color theorem, you removed content without adequately explaining why. In the future, it would be helpful to others if you described your changes to Wikipedia with an edit summary. If this was a mistake, don't worry, the removed content has been restored. If you think I made a mistake, or if you have any questions, you can leave me a message on my talk page. Thank you. Steve M (talk) 21:58, 27 January 2021 (UTC)