OpenTangent

The lower receiver is the part of a gun that actually makes it a gun, at least in the eyes of the law. It's this part that handles the ammunition intake and the trigger system and it's this part that requires a gun license to own. Apparently every other part can be bought separately by anyone without any restriction or regulation.

The word Singularity is to technology as the word Utopia is to society. Additionally, society and technology are inseparable. An absolute Utopia will never exist, likewise the Singularity is not an end, it's simply a new plateau. Once we reach the Singularity the world will be profoundly different, we'll be at whole new level of existence. Issues of health, poverty, politics, etcetera will be gone but we'll face a whole new set of challenges.