Talk:Peridot/@comment-4929778-20151129041821/@comment-5544341-20151129203600

Jontas, shape shifting is different from regeneration. Regeneration gives you a new default form, a base level that costs no energy expendature. Shape shifting is a temporary re-contortion of one's mass. Imagine it like holding one arm above your head the entire time the gem is doing something while shape shifted. Being shapeshifted puts them in a different from from their base form, and can tire them out over time.

As well, regeneration has rules, and we've seen them in action. You have to stick to the same base form each time, though you can add whatever kind of style and design flair you want to it. When you break this rule, your default form becomes unsustainable, as if you were constantly shape shifted, and your strength can give out in the middle of doing something else. You saw how Amethyst's big limbs went small and noodley.

Where I'm going with this, being small like that is Peridot's base shape. She cannot be taller without the limb enhancers, or it'd weaken her already wimpy form.

We don't "forget all the episodes we watch", I just pay actual attention to the worldbuilding, and the rules behind how gems work.