User blog comment:ThePixelKirby/A pretty simple calc/@comment-25603146-20190413124305

I mean... if this is the formula they use, then I don't see what's wrong with the math. 20 PSI isn't exactly a lot for someone to be hit by, so an explosion that'd be said to have "destroyed" things within the radius would probably still knock normal people towards the edge over, some, which is ~what 20 PSI would do, about.