I recently came across an interesting old article, a Bitcoin science popularization piece published by Manus founders over ten years ago. 2013—exactly thirteen years ago. Looking at the discussions from those years and comparing them to the current market situation and cognitive iteration, it really feels like crossing several eras. From the earliest basic concept explanations to now the landing of various ecosystems like DeFi, NFT, Layer2, the development speed of this industry is truly outrageous. Some of the early viewpoints now read as industry consensus, while others seem particularly naive, but regardless, this record itself is very valuable—it documents every step of the crypto world moving from the fringe to the mainstream.