Well imagine a small cube that's about this big standing in front of you in the middle of the room, and as you approached it, it tried to intimidate you by growing into a cube that's twice its height and [eight] times its volume.
これくらい小さなキューブが 部屋の中心にあると思って下さい そしてあなたが近づくと脅かしてきます というのも 高さ２倍・体積４倍に成長するのです