Meanwhile, Technion-Israel Institute of Technology physicist Amos Ori "has developed a theoretical model of a time machine," according to a press release. The theory calls for a "time loop to form as a donut-shaped vacuum, inside which time would curve back on itself, so that a person traveling around the loop might be able to go further back in time with each lap."

It doesn't work...

Otherwise someone would have probably have come back and told them that it does.