Time After Time
"just think of what you would do to build a time machine and then work your way backwards from that. the dr.
A Hole in Fabric
"you invent some time machine or something to correct something that went wrong during this time?" "actually, i don't know how this happened." selim said sadly shaking his head.
Snowblind: The Full Novel
Unless someone was to make a time machine, we wouldn't be traveling backwards there. and i don't even know how you could move sideways in the fourth dimension. anyhow, straight line in fourth, stay in one place in the fifth.