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- Thu Mar 08, 2018 12:36 pm UTC
- Forum: Individual XKCD Comic Threads
- Topic: 1964: "Spatial Orientation"
- Replies: 77
- Views: 15441
Today's post reminded me of something I've wondered about before: is there any way for us to know exactly how fast we're actually going, in some sort of absolute terms? The idea came from a friend of mine and I joking about a time machine, how even a few seconds forward or backwards in time would in...