Our thought processes and perspectives are like to trails winding through a forest. 

The ideas we frequently have become clear, but when we get distracted exploring new concepts or fixating on future goals, even our familiar mental paths can become overgrown and obscured by the noise of the world.

This is why it's beneficial to periodically revisit and refresh the core ideas and viewpoints that have guided us—to retrace those trails, allowing us to regain clarity on the perspectives that shaped our current understanding.

This is a  very important idea in grasping why Bitcoin works, and how it emerges from the individual enforcement of the Bitcoin rules, and how utterly revolutionary this seemingly simple concept really is.

Here is the read, enjoy.

Bitcoin Miners Beware: Invalid Blocks Need Not Apply
Bitcoin is an impenetrable fortress of validation.https://medium.com/hackernoon/bitcoin-miners-beware-invalid-blocks-need-not-apply-51c293ee278b