Are you a rational investor? In this week's Shares we discuss how logical thinking can help you spot market inefficiencies, with 3 practical examples to illustrate the point. We also round up our 10 best picks for 2017, explaining why substantial news is helping them soar beyond the FTSE All-Share performance. We also address investor compensation, and what you can get back when investments go bad, we have market expert commentary suggesting that the pound could fall another 20%, plus a look at a big property conundrum. There's a disruptive technology start-up in our Great Ideas, a high-quality FTSE 250 bargain, a small cap payout under threat and loads of other interesting features, company news, our best investment ideas, market stats and much more.