Lenovo's new modular Thinkbook concept has swappable ports like framework laptops, which is really cool, but it's also modular in other ways, ways you might not expect. This 14-in productivity laptop has a whole other 14-in screen hanging on the back of its lid. You can use it as a touchcreen while it's closed, or use it as an outward-facing second screen for sharing a presentation.But things get even funkier when you remove it from its magnetic mount. Then you can mount it on a hidden kickstand in front of ...