Sheldon’s desire for the model to be "perfect" contrasts sharply with the reality surrounding him. His father is flawed, his Meemaw is legally dubious, and his brother is opportunistic. The model is an attempt to create a pocket universe where things fit together perfectly—where the wings align and the decals are straight. However, the episode suggests that the beauty is not in the perfection of the final product, but in the messy process of its construction. The joy Sheldon derives is not from the shuttle itself (which he knows is a toy), but from the unexpected, albeit reluctant, camaraderie with Georgie.
Toxoplasma does affect rodent behavior, but the idea that Sheldon could easily test his whole family for it (or that it explains all human behavior) is exaggerated. For a show that prides itself on accuracy, this is a rare miss. young sheldon s03e19 mpc