Give one trade a tool built for its worst working conditions

适合谁

Someone with experience in a hands-on trade who wants to test a small physical product for that trade, starting with pre-orders.

核心启示

Stone built a notebook for one working group, chefs, whose daily conditions (heat, grease, water, metal benches) ordinary notebooks handle badly, then proved demand through a crowdfunding pre-sale before committing to stock. The transferable lesson is to pick a trade you can reach, solve one concrete annoyance, and get paid before you build.