Do you think there was an ancient version of Dick Cheney who was for cradleboarding?
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It has actually been studied:
Asymmetric vault modification in Hopi crania.
Kohn LA, Leigh SR, Cheverud JM.
Program in Occupational Therapy, Washington University School of Medicine, St. Louis, Missouri 63108, USA.
Cradleboarding was practiced by numerous prehistoric and historic populations, including the Hopi. In this group, one result of cradleboarding was bilateral or asymmetric flattening of the posterior occipital.
http://www.ncbi.nlm.nih.gov/sites/entrez?cmd=Retrieve&db=PubMed&list_uids=8644878&dopt=Abstract
I doubt Cheney was involved, although his powers are unlimited.