Board Thread:Off Topic/@comment-25396609-20170505174118/@comment-25936766-20170702221253

@Malcom: Ah, alright....

......Wait......how does it work then?

I mean, his Semblance allows him to control sand. Not pressure or temperature. By the same reasoning, how does he control their density? Density generally can be changed due to changes in pressure or temperature, but he doesn't have control over those things, he controls sand.

Even leaving that aside, the very idea requires him to have such severe control over density/pressure/temperature that he could make wet sand turn hard in seconds. Otherwise it's worthless.

Also would making walls or shields of sand even be worth it?