Different knots are produced by strips with different numbers of twists. (sciencedaily.com)
It has a straightforward plot with the expected number of twists and it includes strong, believable, even relatable lead characters who are portrayed with an acceptable level of competence. (thecriticalcritics.com)
However, experiments carried out by mechanical engineer Pedro Reis and colleagues at the Massachusetts Institute of Technology (MIT) in Cambridge showed that the theory came unstuck for greater numbers of twists. (sciencemag.org)