Self-tying shoes Self-tying shoes Self-tying shoes (also known as "self-lacing" or "power laces") are designed to automatically tighten once the user puts them on. Such shoes were initially depicted in the 1989 science fiction film "Back to the Future II". In April 2009, Nike filed a patent for self-lacing shoes, with a design that bears a resemblance to those worn by Marty in the film "Back to the Future II", raising speculation among fans about a possible debut of self-lacing shoes. In 2014, Tinker Hatfield, the designer of the original Nike shoes as depicted in "Back to the Future II", indicated that
GURPS Time Travel GURPS Time Travel GURPS Time Travel is a sourcebook for "GURPS". It was published in 1991. "GURPS Time Travel" presents a menu of options that allows referees to create customized systems appropriate to a variety of campaign styles. Time streams may be plastic, where changes in the past automatically alter the future, or fixed, where the future remains unchanged regardless of what occurs in the past. "GURPS Time Travel" touches upon the topic of player characters travelling from one world to another. "GURPS Time Travel" was designed by Steve Jackson and John M. Ford, and published as a 128-page softcover