I was an economics major at UMSL, under Joseph P McKenna. Economic predictions are useful for nothing. Econometricians can offer a good record of what already happened.
You may as well try to forecast the climate.
I agree, it’s hard to forecast what the economy will do from year to year. However, it was easy to predict a sour economy during the Obama years simply because of his job-killing policies and regulations. Pour water on a fire and it’ll begin to die and go out. Pour gas on the fire and watch it explode. I can’t know for certain the economy will grow under Trump’s leadership, but he’s certainly not pouring water on the fire.