User talk:151.40.84.229

May 2020
Hello, I'm DVdm. I noticed that you recently removed content from Twin paradox without adequately explaining why. In the future, it would be helpful to others if you described your changes to Wikipedia with an accurate edit summary. If this was a mistake, don't worry; the removed content has been restored. 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. - DVdm (talk) 15:47, 25 May 2020 (UTC)

Please do not add or change content, as you did at History of special relativity, without citing a reliable source. Please review the guidelines at Citing sources and take this opportunity to add references to the article. Thank you. - DVdm (talk) 15:48, 25 May 2020 (UTC)

Please stop your disruptive editing. If you continue to add unsourced or poorly sourced content, as you did at Twin paradox, you may be blocked from editing. - DVdm (talk) 16:28, 25 May 2020 (UTC)

You may be blocked from editing without further warning the next time you remove or blank page content or templates from Wikipedia, as you did at Twin paradox. - DVdm (talk) 16:44, 25 May 2020 (UTC)

Note: see also User talk:Tommaso Righi. - DVdm (talk) 21:28, 25 May 2020 (UTC)