Pedraza, Juan F;    Russo, Andrea;    Svesko, Andrew;    Weller-Davies, Zachary;      (2022)    Sewing spacetime with Lorentzian threads: complexity and the emergence of time in quantum gravity.                   Journal of High Energy Physics , 2022  (2)    , Article 93.  10.1007/JHEP02(2022)093 <https://doi.org/10.1007/JHEP02%282022%29093>.       Green open access