User talk:49.145.6.143

April 2021
Hello, I'm Ixfd64. An edit that you recently made to Information and communications technology seemed to be a test and has been reverted. If you want to practice editing, 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! Ixfd64 (talk) 02:01, 16 April 2021 (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.

May 2023
Hello, I'm Materialscientist. I noticed that in this edit to 21st century, 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. Materialscientist (talk) 07:53, 2 May 2023 (UTC)