Video prompt: A busy street market where vendors energetically call out to passersby, showcasing fresh produce and handcrafted goods, while shoppers weave through the lively maze of stalls.
Defect: Deformation (any reason involved with a movement)
Explanation: The crowd at the market undergoes shape changes, appearing rubbery and flexible, with individuals merging into each other, creating an unrealistic effect. This unnatural movement and merging detract from the natural appearance, as people should retain stable forms and remain distinct.

The rubbery, flexible shape changes in the crowd and the merging between individuals are unrealistic. For accurate representation, people should maintain consistent, rigid forms and clear boundaries between one another without merging.