It's that time of year when financial experts are asked to dust off their crystal balls and tea leaves and offer up their predictions for the economy in 2018. At Yahoo Finance, David Nelson warns that the problem with these predictions is that experts tend to extrapolate, i.e., believing a healthy market will continue to be healthy, and vice versa. That said, he admits he falls "into that same camp as many extrapolating 2017 a very good year into the next. ... Strength in overseas markets means our customers are doing well and that's great news for US multinationals." We round up five predictions from Fortune and WalletHub, which notes its last six years of predictions have been relatively prescient, with an average GPA of 3.56.