How do you send a reminder to yourself in the far future? How do you verify your own assumptions if they are not validated with future data? I bacially want th

How do you send a reminder to yourself in the far future? How do you verify your own assumptions if they are not validated with future data? I bacially want this guy, as a Service. https://www.xkcd.com/725/ https://www.xkcd.com/725/