Basilica of the Sagrada Familia took generations to build. It took almost 200 years to craft custom stones from thousands of intricate decisions made by people who may never see the finished building.
In scripture, craftsmanship is a sacred place: in Exodus, Bezalel is entrusted with the wisdom and skill to work metal, stone, and timber. Beauty requires understanding the material deeply enough to give it a lasting form.
That same spirit of craft belongs in the hardest problems pursued today. Consider SpaceX and the challenge of building rockets that can return and fly again. Ambition eventually becomes painstaking work: studying failures, testing assumptions, refining parts, and understanding how every detail affects the whole. Through that attention, a difficult problem gradually becomes readable. Patterns emerge. What once seemed impossible becomes something that can be understood, built, and improved.
Slop begins when the appearance of completion becomes enough. Craft asks whether the thing actually works, whether it endures, and whether someone's life becomes better because it exists. Cathedrals demand extraordinary time and effort, but that effort leaves more than a building: it changes the place around it and what people believe they can create. The same possibility lives in a well-built tool or a breakthrough in engineering. Patiently solving something difficult can make the world more useful, more beautiful, and more open to whoever builds next.
In an era of slop, build Cathedrals.