The evolution of crawling

Hmmm, apparently Flynn can't decide which method of locomotion is the most effective so he is trying out almost all of them.

So far we've spotted (in rough chronological order)

• Laying in one place and crying to be picked up (fairly effective but not sustainable)
• Sitting in one place and crying to be picked up (ditto to above)
• Bottom sitting and turning on the spot with feet whilst both hands are full (good viewpoint but no progress)
• Commando crawling (effective floor cleaning)
• Commando crawling with a ball in each hand (not effective)
• Hands and knees crawling (fairly effective)
• Hands and knees crawling with a ball in each hand (funny to watch)
• Pushing himself up onto knees and throwing both hands forward onto floor (very funny to watch but not very effective or sustainable)
• Bottom scooting plus one hand so the other hand doesn't lose something important
  

Haven't spotted rolling though