Block is an interesting word. It has several meanings. Blocks as solid or metaphorical objects can be obstacles. Blocks can be descriptive of an area designed to keep things in. However, you can use building blocks to create something new or use starting blocks for stability at the start of something new. Our usage of the word shifts based on our current perspective.
Can a block be simultaneously viewed as the start of something new and an obstacle? Is the block preventing us from progress or triggering us to introduce a new way of thinking in order to push through? Build or raze: Opposites attract, even when opposites stem from the same word.