Just because you can do something, should you? Samsung thinks so. Its second experimentally screened phone taps into its hardware R&D and production clout to offer something not many other companies can make, let alone bring to the public outside of a fuzzy proof of concept. And so, following the Galaxy Round, here's the Galaxy Edge. If you take the basic shape and concept, it's the spitting image of the curved-screen Youm prototype spied at CES a little less than two years ago. Now, though, it's a for-real smartphone you can buy. I've been testing it out in Japan, where it launched instead of the Note 4, although both the Note 4 and the Note Edge will eventually be available in the US. Fortunately, despite the unusual, (addictively stroke-able) curved screen, it still packs all of the good things that made the Note 4 such a strong choice. But bragging rights aside, is there enough of an argument for a curved screen? Should you just get the Note 4 anyway?