Evaluative Framework      
1 "Darwinian"      
1.1 Survival Value (DSV) In this context, one is looking for clear scenarios where adopting a bipedal, rather than quadrupedal, mode of locomotion, results in some distinct survival advantage. Although survival value may be realised in subtle ways, for example through kin selection, an immediate life or death scenario favouring bipedalism is judged stronger here.
Wading models were judged best on this criteria simply because they provide the most simple, clear cut selection pressure - stand up and the head stays above the surface of the water. These are the only models that would kill a would-be quadruped immediately.

Behavioral models tended to be judged worst by this criterion.
Models Ranked by this Criterion
s4.1.1 Coastal foraging / Habitat Compulsion 9
s4.1.2 Aquarboreal Model / Habitat Compulsion 9
s4.1.3 Amphibische Genalistheorie / Habitat Compulsion 9
s4.1.4 River Apes / Habitat Compulsion 9
s4.1.5 Wetland USO foraging / Habitat Compulsion 9
s5.1.1 Slow, long-distance walking / Locomotor efficiency 7
s1.5.2 Weapon wielding / Forelimb pre-emption (carrying) 7
s1.1.1 General freeing of the hands / Forelimb pre-emption (carrying) 6
s1.2.1 Carrying food back to gallery forest bases. / Forelimb pre-emption (carrying) 6
s1.2.2 Carrying and scavenging / Forelimb pre-emption (carrying) 6
s1.2.3 Migration-carrying hypotheses / Forelimb pre-emption (carrying) 6
s1.3.1 Female driven infant carrying / Forelimb pre-emption (carrying) 6
s1.4.1 Weapon Throwing / Forelimb pre-emption (carrying) 6
s1.5.1 Tool carriage / Forelimb pre-emption (carrying) 6
s2.2.1 Threat displays directed at other species / Behaviour 6
s2.3.1 Intra-specific threat displays / Behaviour 6
s3.2.1 Postural feeding hypothesis / Feeding 6
s3.4.1 Stalking / Feeding 6
s3.4.3 General scavenging/hunting / Feeding 6
s6.1.1 Thermoregulatory Hypothesis / Thermoregulation 6
s5.3.1 Efficiency of moving from tree to tree / Locomotor efficiency 5
s1.2.4 Male Provisioning / Forelimb pre-emption (carrying) 4
s2.4.1 Sentinel behaviour / Behaviour 4
s3.4.2 Specific Hunting / Feeding 4
s4.3.1 Variability Selection Hypothesis / Habitat Compulsion 4
s5.5.1 Endurance Running / Locomotor efficiency 4
s9.1.1 Multi-factorial / Combination 4
s2.1.1 Nuptial Gifts / Behaviour 3
s3.1.1 Seed Eating / Feeding 3
s3.1.3 Other gathering / Feeding 3
s3.3.1 Arboreal predation / Feeding 3
s4.4.1 Descent from arboreal Hylobatian locomotion / Habitat Compulsion 3
s4.4.2 Arboreal "upwardly mobile" hypothesis / Habitat Compulsion 3
s4.4.3 Orang-utan-like hand assisted bipedalism / Habitat Compulsion 3
s5.2.1 Biomechanical inevitability / Locomotor efficiency 3
s5.4.1 Locomotor de-coupling / Locomotor efficiency 3
s3.1.2 Terrestrial squat feeding on the forest floor / Feeding 2
s2.5.1 Phallic Display directed at females / Behaviour 0
s2.6.1 Copied Gimmick Idea / Behaviour 0
s4.2.1 Walking on Snow or mud / Habitat Compulsion 0
s7.1.1 Iodine deficiency / Dietary Factors 0
s8.1.1 Evo Devo mutation / Random Genetic Factors 0