It's a fantasy role-playing game.

DM: You are Scanlan Shorthalt, a gnome bard . You are the member of the famous group of adventurers. Previously, you moves closer to Keyleth in order to inspire her with a very dirty limerick. Keyleth doesn't quite understand it, but likes it enough to feel inspired.
DM: Interposing Hand. You have half cover, Keyleth, as Bigby's Hand is essentially giving you some sort of armor bonus.
Player: Does it stop him from moving towards her? Is that how it happens?
DM: It gives her half cover.
Player: It's like a wall.
DM: Target can't move through the hand's space if its strength score is less than or equal to the hand's strength score.
Player: Oh shit. It's probably super strong.
DM: The hand's strength score is 26. It is equal.
Player: So what does that mean? It's a roll?
DM: So it can move through the hand.
Player: Shit! Well, that didn't do much.
DM: Hold on. Oh, it's less or equal to. So no, it cannot move through the hand. Sorry. I misread it. Currently, if it tries to force its way through the hand, it's going to hold it in place.
