Ordinary objects compared across decades, with the design reasons for each change.https://worldofcurious.com/en-auhttps://worldofcurious.com/article/objects-that-changed-shape-for-a-reason/https://worldofcurious.com/article/objects-that-changed-shape-for-a-reason/Plug pins, bottle bases, milk cartons and the humble pencil. Ten familiar objects whose current shape solves a problem you have probably never noticed.Fri, 28 Aug 2026 01:00:00 GMTEveryday Objects: Then & Nowdesignobjectsengineeringthen and nowEditorial Team