tag:blogger.com,1999:blog-3907216.post6600826148544567797..comments2024-03-22T22:39:49.773-05:00Comments on I don't know, but . . .: Time traveljameshttp://www.blogger.com/profile/01792036361407527304noreply@blogger.comBlogger3125tag:blogger.com,1999:blog-3907216.post-80821762081786052012016-10-02T17:47:13.388-05:002016-10-02T17:47:13.388-05:00And if you can witness who committed the crime in ...And if you can witness who committed the crime in 2014 and tell the cops in 2015, you can change 2016.Assistant Village Idiothttps://www.blogger.com/profile/01978011985085795099noreply@blogger.comtag:blogger.com,1999:blog-3907216.post-74497507630072463122016-09-30T18:59:27.105-05:002016-09-30T18:59:27.105-05:00Strictly speaking it does, because if you are obse...Strictly speaking it does, because if you are observing you are interfering. (Heisenberg strikes again.) The photons that reach your eye don't go to their original destination.jameshttps://www.blogger.com/profile/01792036361407527304noreply@blogger.comtag:blogger.com,1999:blog-3907216.post-16303682632447806232016-09-30T13:46:53.393-05:002016-09-30T13:46:53.393-05:00Niven's argument, of course, does not rule out...Niven's argument, of course, does not rule out observation-only time travel. (Which I think is more interesting, practically speaking.) Of course, in principle, observing the past is implied by FTL travel, although I don't know about the converse...jaedhttps://www.blogger.com/profile/03328666344764784829noreply@blogger.com