Evaluative Framework      
4 "Epistemological"      
4.2 Complimentary There are a wide variety of ideas which have been suggested to explain the origins of hominid bipedalism. So diverse are the ideas that it has often been suggested that several, if not all, of them must have been working in concert. The specific question of model compatibility, however, seems not to have been systematically considered in the literature to date. Here, a model is judged better the more compatible it is with others.

The multi-factorial model was, not surprisingly, judged the most compatible model here. None were especially incompatible with the others.
Models ranked by this criterion
s9.1.1 Multi-factorial / Combination 9
s2.3.1 Intra-specific threat displays / Behaviour 8
s2.2.1 Threat displays directed at other species / Behaviour 8
s4.1.4 River Apes / Habitat Compulsion 7
s1.2.4 Male Provisioning / Forelimb pre-emption (carrying) 7
s3.4.2 Specific Hunting / Feeding 7
s2.1.1 Nuptial Gifts / Behaviour 7
s1.2.2 Carrying and scavenging / Forelimb pre-emption (carrying) 7
s1.1.1 General freeing of the hands / Forelimb pre-emption (carrying) 7
s1.5.1 Tool carriage / Forelimb pre-emption (carrying) 7
s3.2.1 Postural feeding hypothesis / Feeding 7
s3.1.3 Other gathering / Feeding 7
s4.1.5 Wetland USO foraging / Habitat Compulsion 7
s5.3.1 Efficiency of moving from tree to tree / Locomotor efficiency 7
s1.2.3 Migration-carrying hypotheses / Forelimb pre-emption (carrying) 6
s4.1.3 Amphibische Genalistheorie / Habitat Compulsion 6
s3.4.3 General scavenging/hunting / Feeding 6
s1.5.2 Weapon wielding / Forelimb pre-emption (carrying) 6
s3.4.1 Stalking / Feeding 6
s1.2.1 Carrying food back to gallery forest bases. / Forelimb pre-emption (carrying) 6
s2.4.1 Sentinel behaviour / Behaviour 6
s1.4.1 Weapon Throwing / Forelimb pre-emption (carrying) 6
s6.1.1 Thermoregulatory Hypothesis / Thermoregulation 5
s4.1.2 Aquarboreal Model / Habitat Compulsion 5
s5.5.1 Endurance Running / Locomotor efficiency 5
s1.3.1 Female driven infant carrying / Forelimb pre-emption (carrying) 5
s3.1.1 Seed Eating / Feeding 5
s5.1.1 Slow, long-distance walking / Locomotor efficiency 5
s3.1.2 Terrestrial squat feeding on the forest floor / Feeding 5
s5.4.1 Locomotor de-coupling / Locomotor efficiency 5
s3.3.1 Arboreal predation / Feeding 5
s2.6.1 Copied Gimmick Idea / Behaviour 5
s8.1.1 Evo Devo mutation / Random Genetic Factors 5
s5.2.1 Biomechanical inevitability / Locomotor efficiency 5
s4.1.1 Coastal foraging / Habitat Compulsion 4
s4.3.1 Variability Selection Hypothesis / Habitat Compulsion 4
s2.5.1 Phallic Display directed at females / Behaviour 4
s4.4.2 Arboreal "upwardly mobile" hypothesis / Habitat Compulsion 4
s4.4.3 Orang-utan-like hand assisted bipedalism / Habitat Compulsion 4
s4.4.1 Descent from arboreal Hylobatian locomotion / Habitat Compulsion 4
s4.2.1 Walking on Snow or mud / Habitat Compulsion 4
s7.1.1 Iodine deficiency / Dietary Factors 4