Or if they do, they’re being very careful. Or they’re all on Snapchat.
BBC
A scientific study searching for evidence of time travellers from the future using Twitter has sadly failed to find any.
The study, by physicists Robert Nemiroff and Teresa Wilson of Michigan Technological University, involved looking for "prescient content" as evidence of time travel - people discussing specific things on the internet that they shouldn't have been able to know at the time.
The researchers searched for unique phrases which would not have been in use prior to specific dates - both of them names, "Comet ISON" and "Pope Francis". Comet ISON was discovered on September 21, 2012 and Cardinal Bergoglio was elected Pope on March 16, 2013.
Comet Ison
Nasa Nasa / Reuters / Reuters